The pedigree below concerns the autosomal recessive disease phenylketonuria (PKU). The couple marked A and B are contemplating having a baby but are concerned about the baby having PKU. What is the probability of the first child having PKU
Answer: Hello your question some missing data attached below is the complete question
answer:
P( first child having PKU ) 0.25 ≤ x ≤ 0.5
Explanation:
The pedigree father has PKU ( pp ) ( From the top right )
pedigree mother = PP
The possible resultant progeny = Pp
Resultant progeny marries non-carrier ( Pp x PP ) = PP , PP, pP, pP
Hence B is either ; PP ( non carrier ) or Pp ( carrier )
From left
one of the Resultant progeny = pp ( affected ). this simply means pedigree parents where both carriers or sufferers i.e. Pp or pp
Hence A is either ; Pp or pp
The probability of their first child having PKU
= PP x Pp = PP, Pp, PP, Pp ( probability = 0 in this case )
= Pp x Pp = PP, Pp, pP, pp ( probability = 1/4 * 100 = 25% )
= Pp x pp = Pp, Pp, pp, pp ( probability = 2/4 * 100 = 50% )
P( first child having PKU ) 0.25 ≤ x ≤ 0.5
lets denote dominant Gene = PP, recessive Gene = pp
What is an office what is an office
Answer:
Explanation:
An office can be referred to a building or rooms or a room which is arranged and set up with furnitures and things needed for commercial use or professional work to achieve a goal.
An office is also refered to position of authority occupied by someone to perform some tasks.
Answer:
here's your answer
Explanation:
The office helps in controlling the activities of different people and department of an organisation. Through controlling it ensures that the various activities of business are performed with much accuracy. Memory Center: Office protects important information of past in a safe manner.
the results Mendel obtained during his experiments. It showed that if you cross two plants that were true-breeding for different colors (purple and white), the offspring or first generation (F1) would be ______________ instead of true-breeds, and all were _____________ in color. Interestingly, when he crossed two of these F1 plants, their offspring did not all come out _____________. Instead he obtain a ratio of ______ purple-flowered plant for every ______ white-flowered plant. He concluded that the “heritable factor” for the ____________ trait (white flowers) was not destroyed in the F1 generation. Instead it had been _______________ by the “heritable factor” of the ________________ trait (purple flowers).
Answer:
1. Heterozygous
2. Purple
3. Purple
4. 3
5. 1
6. Recessive
7. Masked
8. Dominant
Please find the missing answers to the questions in BOLD.
Explanation:
As illustrated in this question, Gregor Mendel used the color trait of pea plant to discover his law of dominance.
The results Mendel obtained during his experiments. It showed that if you cross two plants that were true breeding for different colors (purple and white), the offspring or first generation (F1) would be HETEROZYGOUS (Pp) instead of true-breeds, and all were PURPLE in color.
Interestingly, when he crossed two of these F1 plants (Pp × Pp), their offspring did not all come out PURPLE, instead he obtain a ratio of 3 purple-flowered plant for every 1 white-flowered plant. He concluded that the “heritable factor” for the RECESSIVE trait (white flowers) was not destroyed in the F1 generation. Instead it had been MASKED by the “heritable factor” of the DOMINANT trait (purple flowers).
choose the letter of the correct answer 1. Which one of the following is NOT an organic compound? a. Methane b. Carbon dioxide d. Lactic acid C. Oil
Answer:
B
Explanation:
6. The probability that the two offspring you produced share every genotype in common is extremely low. Explain why they are likely to be different.
Answer:
Sexual reproduction is able to generate genetic variation in offspring by 1-independent assortment and 2-recombination during meiosis, and 3-random fertilization.
Explanation:
Sexual reproduction is a type of reproduction that increases the amount of genetic variation in offspring by three main mechanisms: independent assortment of homologous chromosome pairs and recombination during meiosis, and random union of gametes during fertilization. First, sexual reproduction is associated with the independent assortment of chromosomes during meiosis, i.e., the orientation of homologous chromosome pairs is a random process that is different for every cell that undergoes meiosis. In consequence, chromosomes assort randomly into gametes, thereby the segregation of alleles of a gene pair is independent of the segregation of another set of alleles of a different gene (as stated in the law of independent assortment). Second, sexual reproduction generates genetic variation by recombination, which is the exchange of genetic material between non-sister chromatids during meiosis I (prophase I). This genetic process (recombination) is able to generate new alleles in offspring. Third, sexual reproduction also involves the random union of two haploids (n) gametes during fertilization, which results in the formation of a diploid (2n) zygote that develops into a new individual. In humans, the sperm cell has 8 million possible (2²³) chromosome combinations, which fertilizes an ovum cell that also has approximately 8 million chromosome combinations, thereby producing a tremendous genetic variation in offspring (around 64 trillion possible zygote combinations).
Using the organisms you identified in part B, create a food web for the ecosystem you chose. Use this sample food web for reference, although your food web will contain fewer organisms. Note that your food web does not have to include images, but you may include them if you choose. However, be sure to include arrows to indicate the direction of energy flow in your food web. Design your food web using any method listed below:
Unfortunately you did not introduce the organisms identified in part B, as the question shows. This makes it impossible for me to answer this question, but I will try and help as best I can.
In the figure attached to the question below, it is possible to see an example of a food web and the arrows that indicate the direction of the energy flow within this food web.
In this sense, we can determine that a food web is the set of food chains that complete and mix. A food chain shows how living organisms organize themselves so that one feeds on the other, whereas in the food web, this food chain is shown in a more realistic way, as it shows how food chains mix and interact within the ecosystem, as they do not there are food chains isolated in nature.
Answer:
I did Lake Tahoe. Feel free to use this image!
Explanation:
help me what is this stuff please i really need halp
Answer:
i dont no the answer
Explanation:
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In the experiment on stimulation of the isolated sciatic nerve, the compound action potential increases in amplitude with an increase in stimulation voltage. This is due to:__________.
a. simultaneous recruitment of small and large diameter axons in the nerve
b. recruitment of small diameter axons followed by large diameter axons in the nerve
c. increase in the size of action potentials produced be each individual axon in the nerve
d. recruitment of large diameter axons followed by small diameter axons in the nerve
The compound action potential increases in amplitude with an increase in stimulation voltage is due to recruitment of small diameter axons followed by large diameter axons in the nerve.
what is axons?The part of a nerve cell (neuron) that transports nerve impulses away from the cell body is known as an axon. A neuron has one axon that connects it to other neurons, muscle cells, and gland cells.
What is compound action potential?Compound action potential measurement capabilities are built into cochlear implants and are used as objective measures during device setup and programming. Because the stimulus recruits many fibers simultaneously and synchronously, the response is called a compound action potential because it is the sum of the many potentials recruited.
The amplitude of the reaction is increased via summation and synchronous production, making detection possible. A variety of diagnostic methods include recording the electrical activity of peripheral nerve neurons. A second deflection will emerge in the displayed waveform when we gradually increase the stimulus voltage using the control knob on the stimulator.
hence, the correct answer is B.
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When a neuron is stimulated and sodium channels open, the process of has begun. Structures of the nervous system surrounding, but not part of the central nervous system are part of the . Two consecutive neurons communicate at a , where they physically come together. are a group of natural chemicals that reduce the perception of pain. Supporting cells of the nervous system are collectively called . When potassium channels have been open long enough to go below resting membrane potential, has occurred.
Answer:
- When a neuron is stimulated and sodium channels open, the process of depolarization has begun.
- Structures of the nervous system surrounding, but not part of the central nervous system are part of the peripheral nervous system
- Two consecutive neurons communicate at a synapse, where they physically come together.
- Endorphins are a group of natural chemicals that reduce the perception of pain.
- Supporting cells of the nervous system are collectively called neuroglia
- When potassium channels have been open long enough to go below resting membrane potential, hyperpolarization has occurred.
Explanation:
Neurons undergo depolarization in response to diverse stimuli (e.g., heat, light, electrical, chemical, etc). The depolarization occurs when sodium (Na+) ions pass through specific channels (i.e., open voltage-gated Na+ channels) into a neuron, which causes an increase in the positivity of membrane potential. On the other hand, hyperpolarization occurs when potassium (K+) channels remain open and Na+ channels reset, thereby producing an increase in negativity of membrane potential. The peripheral nervous system (PNS) is composed of the cranial nerves, spinal nerves, peripheral nerves, and neuromuscular junctions, which connect the Central nervous system (CNS) to the organs, limbs, and skin. Endorphins (e.g., serotonin) are polypeptides secreted by the pituitary gland and CNS to relieve stress and pain. Neuroglia refers to a class of neural cells that have ectodermal (e.g., astroglia, peripheral glial cells) or mesodermal (e.g., microglia) origins. Neuroglia cells are involved in diverse roles, including, among others, the formation of the blood-brain barrier, homeostatic support, provision of nutrients for neurons, structural support to nerve cells, etc.
If you grew up with a family pet, then you have surely noticed that they often seem to hear things that you don’t hear. Now that you’ve read this section, you probably have some insight as to why this may be. How would you explain this to a friend who never had the opportunity to take a class like this?
Answer:
Force her/him
Explanation:
so that she /he can hear u
g 20. Name two bones connected by an interosseous membrane found in the crus and/or sural region. Which one is the medial bone
Answer:
Tibia and fibula. Tibia (medial bone)
Explanation:
The tibia is the medial bone of the lower leg (it is the second-largest bone next to the femur), whereas the fibula is the lateral bone of the lower leg. The tibia functions to transmit the majority of the force in the lower leg. The tibia articulates at the proximal end with the femur and fibula; where this bone (tibia) articulates at the distal end with the fibula and the talus bone of the ankle. The tibia and fibula are connected via an interosseous membrane, which is a thin sheet of connective tissue that spans the space between two bones.
Explain the benefit of higher myoglobin levels for individuals living at high altitudes
Look at the scientific names for the two organisms below:
Felis domesticus
Felis bengalensis
What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.
Answer:
B. The organisms are different subgroups of the same species.
QUESTION:-
Felis domesticus (Domestic CAT)
Felis bengalensis (Leopard Cat)
What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.
ANSWER:-
FIRST PART IS THE GENERIC PART ( genus name )
SECOND PART IS THE SPECIFIC NAME ( specific epithet )
ATQ:-
AS THE GENERIC OR GENUS NAME SAME SO THEY BELONG TO SAME GENUS
BUT DUE TO DIFFERENT SPECIFIC NAME OR SPECIFIC EPITHET WHICH SHOWS THAT THEY BELONG TO DIFFERENT SPECIES .
SO URE ANSWER IS PART C->
C. The organisms are different species but belong to the same genus.8. Two rabbits are bred together. One is heterozygous for agouti coat
(genotype: Cch) and the other is albino. What are the possible phenotypes
of their offspring? Construct a Punnett square to support your answer.
Answer:
- Parental cross = Cch x chch
- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio
Punnett square:
ch ch
C Cch Cch
ch chch chch
Explanation:
A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular locus. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given locus (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.
Which of the following is a process that is prompted by a question?
A. Conclusions
B. Observation
C. Measurement
D. Inquiry
Answer:
D
Explanation:
Should be correct I guess.
3. In biological terms are you a
producer or a consumer? Explain
your answer.
Answer:
consumer
Explanation:
because we get things from living things
Which non-mineral nutrient is essential for photosynthesis? ANSWER ASAP!!!!!!!!
A.hydrogen
B.potassium
C.nitrogen
D. carbon dioxide
A. hydrogen
Nearly all organic compounds also contain H atoms, which explains why plants need the H they get from water molecules through photosynthesis. Hydrogen ions are vital in both aiding proton gradients to help drive the electron transport chain in photosynthesis, and for plant respiration.
#CarryOnLearningAnswer:
carbon dioxide
Explanation:
because carbon dioxide is needed for respiration
In human populations of northern European origin, the disorder called hemochromatosis causes excess iron uptake from food and affects one in 200 adults. Among individuals 15 to 50 years old, men are ten times as likely as women to suffer from iron overload. Part A Taking into account this range of ages, what explains this difference
Answer:
Females of reproductive age lose iron through menstrual blood
Explanation:
Iron is an essential micronutrient involved in the formation of hemoglobin, myoglobin and many enzymatic groups. Moreover, hemochromatosis is a genetically inherited disorder caused by mutations in genes associated with the processes of absorption, transport and storage of iron. The excess of iron is stored in different organs (e.g., liver, heart, pancreas, etc), causing characteristic tissue damage. During each menstrual cycle, women and girls suffer a blood loss of approximately 40 ml, which is associated with an average loss of 1.6 mg of iron. In consequence, it is expected that women of reproductive age (ie, 15–49 years) lose iron during their menstrual periods, thereby avoiding iron overload caused by hemochromatosis.
what scenerio in which a population is evolving. Explain how the variants within a population was generated.
The importance of water properties on plants and animals
The importance of water properties on plants and animals.
Answer:The importance of water in plants is that it helps plants to make their own food, because water plays a very important role in Photosynthesis, and as well it helps them to grow.
The important of water in animals is that it is main need for animals to survive as well as humans. Without water even a single organism won't exist in this Earth.
Hope it helps you :)The human body is made up of more than three-fourths of water, and all animals and plants require water to thrive.
Why water is essential for plants and animals?Water is used by all living things to transport nutrients throughout the body and remove waste. Among its many crucial functions, water aids in the digestion of food and the preservation of organisms' heat.
The term "universal solvent" refers to water's enormous capacity to dissolve a wide range of molecules, and it is this capacity that makes water such a priceless life-sustaining agent.
Water's function as a solvent aids cells in the transfer and utilization of molecules like oxygen or nutrients on a biological level.
Therefore, to do all the cellular processes by plants and animals there is need of water.
Learn more about water, here:
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The _______ is the part of the neuron that carries information away from the cell body.
Which product comes from protist
A. Yeast in sourdough bread
B. Mushroom on pizza
C. Cork in bulletin boards
D. Carrageenan in milk
Answer:
C. The cork in bulletin boards
Explanation:
Cork is made primarily from a plant called Quercus suber (the cork oak).
Which of the following sentences uses commas correctly? Carol was the last person out of the house wasn't, she? Carol was the last person, out of the house wasn't she? Carol was the last person out of the house, wasn't she? Carol, was the last person out of the house wasn't she?
Answer:
The third sentence......................
Explanation:
The correct sentence is Carol was the last person out of the house, wasn't she?
Why is a comma important?Commas help your reader figure out which words go together in a sentence and which parts of your sentences are most important. Using commas incorrectly may confuse the reader, signal ignorance of writing rules, or indicate carelessness.
What are the Rules of commas?Comma Rules
Use a comma after an introductory phrase or clause. Use commas before and after a parenthetical phrase or clause. Use a comma to separate two independent clauses linked by a coordinating conjunction (and, but, for, nor or, so, yet) Use a comma to separate items in a series.Learn more about the use of commas here https://brainly.com/question/2251561
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Classify the receptor descriptions or names below based on which neurotransmitter each is associated with. alpha-Adrenergic beta-Adrenergic Muscarinic Nicotinic Only receptor found in parasympathetic synapses Associated with mushroom poison Ultilizes calcium ions as a second messenger Associated with tobacco Norepinephrine Acetylcholine Reset
Answer:
1. Acetylcholine:
- Muscarinic
- Nicotinic
- Associated with mushroom poison
- Only receptor found in parasympathetic synapses
- Associated with tobacco
2. Norepinephrine:
- alpha-Adrenergic
- beta-Adrenergic
- Utilizes calcium ions as a second messenger
Explanation:
Acetylcholine (ACh) is a neurotransmitter that acts in both the central and peripheral nervous systems. Cholinergic receptors are receptors that bind to ACh. Muscarinic receptors are G protein-coupled receptors involved in the parasympathetic nervous system, which play roles in a variety of physiological responses (e.g., ACh binds to muscarinic receptors in the pathophysiology of asthma, leading to an increased mucus secretion). Nicotinic receptors bind to nicotine, while muscarinic receptors bind to muscarin (muscarine is a well-known neurotoxic alkaloid found in certain mushrooms). Nicotine receptors are also called cholinergic receptors since they also respond to ACh. On the other hand, norepinephrine (NE) binds to alpha-adrenergic and beta-adrenergic receptors in different tissues. Both alpha-adrenergic and beta-adrenergic receptors are G-protein coupled receptors. Alpha-adrenergic receptors are involved in the regulation of blood pressure and generating a sympathetic 'fight and flight response'; whereas beta-adrenergic receptors modulate sympathetic responses in the cardiovascular, metabolic, and central nervous systems (NE activates the beta1-receptor). NE can induce Ca2+ release, which is a second messenger that controls a wide variety of cellular processes.
Question 8 of 24
Which item is a carbon sink?
A. Beach sand
B. Ocean water
C. Glaciers
D. Forest fires
SUBMIT
Answer:
oceans water
Explanation:
How is it possible for mad made things to move?
which fundamental units are involved in force do step Wise
Force = ma
We know, the unit that the S.I. unit of mass is Kg.
We also know that a = (v - u)/t.
We know that v = d/t and u = d/t and the S.I. unit of t(time) is s.
We know that the S.I. unit of d(displacement) is m.
So, the S.I. unit of v is m/s and the S.I. unit of u is m/s and the S.I. unit of t is s.
So, the S.I. unit of a is m/s×s or m/s²
So, the unit of force is
(unit of m) × (unit of a)
= kg × (m/s²)
= kg.m/s²
=
[tex]kg \: m \: {s}^{ - 2} [/tex]
Or more simply,
F = ma
=> F = m{(v-u)/t}
Putting units,
Newton = kg[{(m/s) - (m/s)}/s]
=> Newton = kg{(m/s)/s}
=> Newton = kg(m/s²)
=> Newton = kg.m/s²
=> Newton = kg.m.(s^-2)
Question 9
What is the main difference between a prokaryote and eukaryote cell?
Answers:
The presence of a cell wall
The presence of genomic DNA
The absence of genomic DNA
Crossing over
The absence of a cell wall
Question 10
Answer:
Crossing over
Explanation:
Prokaryotic cells are cells that do not possess a membrane bound nucleus to house their genetic material e.g bacteria while eukaryotic cells possess a membrane bound nucleus that houses their genetic material e.g plants.
One important characteristics of prokaryotic cells is that they do not undergo any form of sexual reproduction, hence, cannot undergo MEIOSIS, which only occurs in sexual reproducing organisms. Prokaryotes reproduce asexually by binary fission.
Crossing over is a unique process that only occurs during meiosis. Since prokaryotic cells do not undergo meiosis, this means that crossing over is the difference between prokaryotic cells and eukaryotic cells in this question.
Natural selection is most likely to be the cause of a change in a population's
allele frequencies when:
A. the ecosystem experiences few disturbances,
B. the population drops below its carrying capacity.
C. the predators are removed from the ecosystem,
D. the population has reached its carrying capacity.
PLEASE HELP URGENT
Answer:handheld c
Explanation:bend c smlOc
In mice, apricot eyes is recessive to black eyes. Tail length is governed by another gene, linked to the eye color gene. Long tails is dominant to short tails. To determine the distance between the two genes, a double heterozygote is mated in a testcross and the classes of progeny produced were as follows:
Apricot eyes, Long tails 33
Apricot eyes, Short tails 20
Black eyes, Long tails 17
Black eyes, Short tails 30
Determine whether the heterozygous parent is in the cis or trans arrangement.
a. Cis
b. Trans
Answer:
trans
Explanation:
From the given information:
The study observes the genes present in mice for eye color and tail length. Since both genes are linked, it implies that they exist in the same chromosomes.
Black eyes is dominant over apricot eyes
Let Black eye be B and apricot eyes be b
Long tail is dominant over short tail
Let long tail be L and short tail be l
If double heterozygote(homoozygous-recessive) engage in the testcross
Then:
From the result given:
The parental combinations are:
Apricot eyes, Longtail (bL / bl) = 33
Black eyes, Short tails (Bl / bl) = 30
The recombinant genes are:
Black eyes, Long tails (BL / bl) = 17
Apricot eyes, Short tails (bl / bl) = 20
The recombination frequency relates to the distance between the two genes which can be computed as:
= (20+17)/100
= 37%
Thus; the heterozygous parent is in trans arrangement.
