A population of lab rats recently escaped into the sewer system of Washington, D.C. A brave researcher sampled this population and estimated the following phenotypic frequencies, which were caused by a single gene with two alleles: E and e. 61% normal eyes (EE) 26% cross-eyed (Ee) 13% blind (ee) a) If this population were to reach a Hardy-Weinberg equilibrium (HWE) in one generation, what would the phenotypic frequencies be in that new HWE generation
Answer:
the population has a Hardy-Weinberg equilibrium
Explanation:
According to the case and the information given, the genotype frequencies are:
EE (p2) = 0.61
Ee (2pq) = 0.26
ee (q2) = 0.13
To obtain the allele frequencies we can perform the following equation
Frequency of E = p = p2 + 1/2 (2pq) = 0.61 + 1/2 (0.26) = 0.61+ 0.13 = 0.74
replacing the data we obtain:
Frequency of e = q = 1- p = 1 - 0.74 = 0.26
Regarding the expected frequencies of the genotype, taking into account that there is a Hardy-Weinberg equilibrium:
EE (p2) = (0.74) 2 = 0.547
Ee (2pq) = 2 × (0.74) (0.26) = 0.384
ee (q2) = (0.26) 2 = 0.067
We know that: (p² + 2pq + q² = 1)
replacing with the obtained data:
0.547 + 0.384 + 0.067 = 0.998 ~ 1
finally we can affirm that the population has a Hardy-Weinberg equilibrium
How can diversity be determined by the environment?
Answer:
Emy if you are new here let me tell you u can't a descriptive questionnn for 10 points u need to shoot it to 100
Answer:
Broadly speaking, the diversity of an ecosystem is dependent on the physical characteristics of the environment, the diversity of species present, and the interactions that the species have with each other and with the environment
Explanation:
4. Is predation a density-dependent or density-independent factor?
Answer:
The correct answer is density-dependent factor.
Explanation:
The factors whose influences on the growth or size of the population changes with the density of the population are known as the density-dependent factors. The availability of food, disease, predation, and migration are some types of density-dependent limiting factors.
One of the density-dependent factors in nature is predation, predation confines various populations. The population of the prey and the predator encircle towards each other, with the population of the predator somewhat lagging behind the population of the prey.
With the increase in the population of the prey, the predator gets more to eat, and thus the population of the predator increases. With the increase in the predator population, pressure imparts on the prey population and it starts to decline. The decline in the availability of the food eventually makes the population of the predator to decline. Therefore, it can be seen that both the population of the prey and the predator are affected by predation, that is, a density-dependent factor.
Replanting trees on a bare hillside is an example of
(A) conservation and afforestation
(B) preservation and conservation
(C) restoration and preservation
(D) reafforestation and restoration
Answer:
(D) Reafforestation and restoration
Explanation:
Replanting trees in helping to "re-forest" the hill and restore it to how it was before.
Replanting trees in a place where trees used to exist is an example of reafforestation and restoration.
Afforestation means to create a forest (trees) where they do not exist before.Reafforestation, on the other hand, means to create a forest (by planting trees) to an area that used to be a forest but has been removed due to one reason or another. Similarly, restoration means restoring an area to what it used to be. Forest restoration is the practice of restoring a forest that has been modified by natural or anthropogenic processes to its old self.Thus, replanting trees on a bare hillside is an example of reafforestation and restoration.
More on forests can be found here: https://brainly.com/question/23533634?referrer=searchResults
Which of the following occurs during artificial cross pollination? A. A different plant species is used to pollinate another plant. B. The plants reproduce sexually by self pollination. C. The scientist completely controls the transfer of pollen from one flower to the stigma of another.
Answer:
c
Explanation:
its artificial= done by humans
During artificial cross-pollination, the scientist completely controls the transfer of pollen from one flower to the stigma of another.
What do you mean by Cross-pollination?Cross-pollination may be defined as a type of pollination in which sperm-laden pollen grains are transferred from the cones or flowers of one plant to egg-bearing cones or flowers of another.
Any artificial thing requires the interference of human activity. This activity by human increase the chance of those who give better productivity in every aspect.
Therefore, during artificial cross-pollination, the scientist completely controls the transfer of pollen from one flower to the stigma of another.
To learn more about artificial cross-pollination, refer to the link:
https://brainly.com/question/1048945
What are the 5 main sinks of carbon
Answer:
bio, pedosphere, litho, hydro, a t m o
Explanation:
sphere
Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 32% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam (teehee), calculate the following:
1. The percentage of butterflies in the population that are homozygous dominant
2. The number of heterozygous butterflies if the population contained 4,216 individuals
Answer:
48% Heterozygous of the population, 12% Homozygous dominant size.
Explanation:
Given the characteristics of its population,
Brown (B) predominates over white (b) color.
Recessive phenotype frequency (Q)= 40%= 0.4
According to the Hardy-Weinberg principle, the frequency is given by P and Q for a population with the dominant and recessive trait, where P+Q=1 preserves the equilibrium of the population allele.
So then, P = 1-Q
P=1-0.4=0.6
Heterozygotic butterflies = 2PQ
So, 2PQ= 2x0.6x0.4=0.48
That is, 48 percent of people are heterozygous
Homozygous dominant individual frequency = 1-(40 + 48) = 12 i.e. 12%
Answer:
C. 0.48
Explanation:
Genes are responsible for:
A.
all preferences of an organism.
B.
no traits of an organism.
C.
all traits of an organism.
D.
all inherited traits of an organism.
PLEASE HELP
Answer:
C. All traits of an organism
Several types of ___________ live in our mouth and are part of a sticky substance called plaque. Improper brushing causes plaque build-up, or tartar, and will eventually cause tooth decay.
Answer:
Germs
Explanation:
Plague is a type of germ, therefore the word would best fit the blank
hope this helps :)
explain the process (reflex action) that happens when you pull your arm away from an open flame. use steps to explain your answer. identify the receptor in the skin, the stimulus, the neurons,the effector(muscle) and the body's response to the stimulus.
Answer:
A reflex action is defined as an involuntary action of body in response to a stimulus, which protects the body from any harmful conditions including touching open flame.
A reflex action follows a sequence of action that helps in involuntary action, tha include the stimulus, receptor in the skin, the neurons (sensory, relay and motor neurons), the effector(muscle) and resposne of body to stimulus.
In the reflex action when a person pull his/her arm away from an open flame, the stimulus will be the hot flame that send a signal to the nervous system.
The sensory receptor found in the dermis or epidermis of skin called cutaneous receptors, senses the temperature change.
Then the sensory neuron comes in action which sends electrical impulses to a relay neuron (located in spinal cord) and relay neuron sends impulse to motor neuron.
Motor neuron sends that electrical impulses to a muscle which act as an effector which allows muscle to contracts to move hand away.
So, at the end the body resposnes to move hand aways from the open flame.
Which word or phrase below is defined by the following:
A relationship between two organisms in which one organism hunts the other.
Consumer
Predation
Producer
Decomposer
Answer
Predator
Explanation:
Answer: Predation
Explanation:
In predation, one organism, the predator, kills and eats another organism. (Predators hunt)
How dose natural selection lead to evolution
Answer:
Naturally selected organisms will survive and reproduce better adapted to the environment. This indicates that this model organism's beneficial allles are passed to offspring. The selection cycle contributes to adaptation for several years.
Explanation:
Hope this helps.
Which of the following statements is true about the role of water in celular respiration?
It reacts with glucose.
It reacts with oxygen
It is one of the beginning compounds.
It is one of the ending compounds.
Answer:
it is one of the ending compounds
Explanation:
Answer:
This one is D Have a good day
Explanation:
3 things that Euglena gracilis do for the environment?
Answer:
Explanation:phlagellum... i have to have 20 characters for a simple answer, so im just typing i can actually submit my answer
Plants also have organs that are made up of different tissues working together. Which is an example of a plant organ?
Select one or more:
a. leaf
b. shoot system
c. chlorophyll
d. root system
Answer:
b. shoot system
Explanation:
the shoot system connects all the different parts of the plant (leaves, stem, roots) and helps move the water and minerals throughout the plant. Hope this helps and is right, I'm pretty sure it is but I could be wrong :)
What is the advantage for birds of not having a bladder?
Answer:
Explanation:
The urinary bladder is a flexible sac that can expand and contract and that holds urine.
Urea is excreted mainly by birds and it happens to be the main chemical in urine, without the water in it, the birds excrete just solid droppings instead of as a liquid.
Now, birds physiology is such that they have only one opening to get rid of their (solid) waste and they do not have a bladder.
). You are studying an allele T that governs parasite resistance in a large population of gazelles. You observe that different combinations of T and t produce phenotypes that have different fitnesses due to differences in parasite resistance. The fitness of TT is 0.30, the fitness of Tt is 0.32, while the fitness of tt is 0.34. The T allele starts at a frequency of 0.70, while t starts at a frequency of 0.3. i. Assuming Hardy-Weinberg equilibrium except for selection, what will the frequency of T be in the next generation
Answer:
The New Allelic frequency of the T allele in the next generation is 0.6865
Explanation:
In the attached file you will find the resolved problem.
You will probably need the definitions of the following terms:
Initial allelic frequency: (number of homozygote individuals + half number of heterozygote individuals) / Total number of individuals Relative contribution of each genotype: Zygote frequency x Relative aptitude Average aptitude W: It is the sum of relative contribution of each genotype to the next generation.WTT x p2 + WTt x 2 x p x q + Wtt x q2
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what is the relationship between peripheral resistance and blood pressure ? between blood viscosity and blood pressure
Answer:
Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.
The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase.
What makes plants green?
Answer:
Green plants are green because they contain a pigment called chlorophyll.
Explanation:
Answer: A pigment called Chlorophyll
Explanation: chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
If I put a plant under Greenlight it would be able to photosynthesize true or false
Answer:
false
Explanation:
chlorophyll does NOT absorb green or blue light strongly
Answer:
yes it's true, photosynthesis will occur
To support the ecosystem in the previous question, botanical gardens are propagating these trees for sale. Although seeds have been collected, the commercially available plants are from cuttings and tissue culture. Based on the life cycle of conifers, why is it not practical to reproduce Wollemi pines from seed or even to sell the seeds?
Answer:
A tree that possesses scale or needle-like leaves and cones that remains green throughout the year is known as a conifer. Some of the examples of conifers are cedars, junipers, redwoods, pines, etc. These trees have great economic importance as they are the prime sources of turpentine and resins, and are also a great source of softwood.
It is not practical to cultivate the Wollemi pines from their seeds, as the majority of the seeds that fall from the cones of Wollemi are not viable, and their cultivation may even consume many months. The species mentioned is also considered as endangered, therefore, it will not be feasible to cultivate them via the help of seeds.
As a scientist working for an anti-bioterrorism task force, you are asked to evaluate some biological samples for the presence of Yersinia pestis, the organism that causes the plague. After confirming that the samples do contain Y. pestis, you instruct your team to begin sequencing the strain. Since the genome sequence of Y. pestis is already known, why would sequencing this strain be useful?
Answer:
To gather relevant knowledge about their origin and to determine if the strain has been genetically modified.
Explanation:
A researcher researching with the anti-bioterrorism working group, they are required to assess certain blood specimens only for existence of Yersinia pestis, the organisms which causes the disease.
Since verifying that perhaps the varieties showed Y. Pestis, they are instructing their group to start sequence alignment the strains. So, this is to collect specific knowledge about their origin and to assess if the strain has also been genetically modified.
In your post, discuss ONE Neanderthal or Denisovan gene that is currently found within our species. Tell us about the gene and its function. Explain what it does for us. (Make sure you give a citation.) Explain in your own words any possible advantages that your Neanderthal or Denisovan gene might have. Make sure you give in informed opinion that is grounded in your research. Caution: Make sure that your chosen genetic variant is not simply a result of common ancestry. For example: FOXP2 is a gene that Neanderthals and Sapiens share because of common ancestry. Verify that the genetic variant that you are looking at is actually derived from Neanderthals, Denisovans or another species. You will have to respond to two other student posts. Make sure you cite your work.
Answer:
It has been shown that many microRNAs (miRNAs) were differentially expressed in Neanderthal and Denisovan genomes.
Explanation:
MicroRNAs (miRNAs) genes encode for RNA regulatory sequences capable of modulating gene expression patterns, thereby they play critical roles in evolution and development. It has been proposed that these miRNAs might control the expression of TRAPPC9, GRID1, PRDM16, NAV2, SorCS2, CAMTA1, and ASIC genes, which are involved in neurocognitive developmental functions.
You can read this publication about this important issue:
Cserhati et al. (2018). Motifome comparison between modern human, Neanderthal and Denisovan. BMC genomics, 19(1), 472.
If a water well is actively pumped, the water table will *
O be raised around the well
O stay at the same level as before pumping
O be depressed around the well
O be recharged
Which of the following categories includes all of the others?
Species
Population
Community
Ecosystem
Answer: population
Explanation: because is the major factor and the more important to order al species
imaginary essay
Exchange place with best friend
A fertilized egg, or a
is formed from the fusion of egg and sperm.
vagina
uterus
zygote
ovary
Answer:
Zygote
Explanation:
A zygote is a fertilized egg.
Answer:
zygote
Explanation:
they're correct !
4. Does simple diffusion require an input of energy?
Answer:
no
Explanation:
Simple diffusion does not require energy or need the assistance of a transport protein. Other larger or charged molecules that diffuse across a membrane may need assistance from a protein.
BTW I NEED THIS ASAP what words can i add to make a word with trait variation?
Answer:
artist, strait, air, art, at...
Explanation:
