Answer:
Biological control.
Explanation:
The introduction of parasitoid wasp into the sub-Saharan region in order to control the population of mealybug throughout most of Africa. This approach represented a form of biological control because one harmful organism is controlled with the help of other living organisms that feed on them. This method is environmental friendly and good as compared to chemical method of removing harmful insects.
For summer squash, the dominant allele Y for gene 1 leads to yellow color while the recessive allele y leads to green color. Alleles of gene 2 can prevent color formation, with the dominant allele W leading to white squash while the recessive allele w does not interfere with color development. How many phenotypes would be observed among the offspring of the following cross: YyWw x YyWw
Answer:
Three phenotypes:
12/16 individuals are expected to be white3/16 individuals are expected to be yellow1/16 individual is expected to be greenExplanation:
Available data:
Gene 1 → Dominant allele Y ⇒ yellowRecessive allele y ⇒ green
Gene 2 → Dominant allele W ⇒ prevent color ⇒ WhiteRecessive allele w ⇒ Does not prevent color
Cross:
Parentals) YyWw x YyWw
Gametes) YW, Yw, yW, yw
YW, Yw, yW, yw
Punnett square) YW Yw yW yw
YW YYWW YYWw YyWW YyWw
Yw YYWw YYww YyWw Yyww
yW YyWW YyWw yyWW yyWw
yw YyWw Yyww yyWw yyww
F1) Genotype
1/16 YYWW2/16 YYWw1/16 YYww2/16 YyWW4/16 YyWw2/16 Yyww1/16 yyWW2/16 yyWw1/16 yywwPhenotype
12/16 white individuals ⇒ Y-W-, yyW- (Dominant W allele is present, inhibiting the expression of color)3/16 yellow individuals ⇒ Y-ww (Dominant W allele is absent, so color can be expressed. Y allele determinates yellow color)1/16 green individuals ⇒ yyww (Dominant allele W is absent, so color can be expressed. Only y alleles are presents coding for green color)Which description best defines blastocyst? ОА. a fertilized egg OB. an egg released from the ovary Ос. a mass of specialized cells OD an embryo with a notochord Reset Next
Answer:
ob
Explanation:
Scientists are trying to find the causative agent for a new disease in chicken. They grow a culture of what they think is the causative agent. They then inoculate a large group of healthy representative chicken with the agent, but none of the chicken become ill. Applying the Germ Theory of Disease, which of the following could explain the results (choose all correct answers)?
A. They isolated resident microbiota (look in your textbook for definition)
B. The suspected causative agent is found in healthy chickens.
C. The true causative agent is not an infectious disease.
D. The suspected causative agent is an infectious disease.
Define (Chlorophyll)
Thank you!
Answer:
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
Answer:
Chlorophyll is a green pigment that is in all green plants and cyanobacteria. It is responsible for the absorption of light that provides energy for photosynthesis.
Explanation:
3 times the sum of 2 and y?"
Answer and Explanation:
3(2 + y) is the answer.
The 3 is multiplying the 2 and y inside the parenthesis.
#teamtrees #PAW (Plant and Water)
What are the 3 major parts of the circulatory system?
Answer:
heart, veins, and your skin
Explanation:
the skin keeps the blood inside your body, the heart pumps it throughout your body, and the veins carry it.
In a haplodiploid mating system, how can the coefficient of relatedness between two sisters be 0.75 (75%)? Females are haploid, and they pass on 100% of their genes, whereas males are diploid and pass on 50% of their genes, meaning that the coefficient of relatedness is 0.75. Females can reproduce asexually, meaning they produce clones, and those clones share on average 75% of the genes of their sisters. If a queen mates with a single drone, then all the resulting females have all of the same genetic contribution from the male, since males are haploid and contribute 100% of their genes. Male and female bees are both diploid. The males contribute 100% of their genes to their offspring, and females contribute 50%. Therefore, each female offspring shares 75% of her genes with her sister siblings on average.
Answer:
If a queen mates with a single drone, then all the resulting females have all of the same genetic contribution from the male, since males are haploid and contribute 100% of their genes
Explanation:
Haplodiploidy is a type of sex-determination system where males are haploid (i.e., they contain only a set of chromosomes 'n') and develop from unfertilized eggs, whereas females are diploid (i.e., they contain two complete sets of chromosomes '2n') and develop from fertilized eggs. The bees show this haplodiploid system of sex determination, which is quite common to many hymenopterans. In bees, workers and queens are diploid (2n) females and contain 32 chromosomes, a set of 16 chromosomes is contributed by the queen's egg, and another set of 16 chromosomes is contributed by the drone sperm (16 + 16 = 32 chromosomes). On the other hand, drones are haploid (n) males and contain only one set of 16 chromosomes, which is exclusively contributed by the queen's egg.
How is pH measured?
A. It is based on a scale of o to 14.
B. It is a percentage between 1 and 100.
C. It is a level between 1 and 4.
D. It is a decimal between 0 and 1.
what is life in general.
Answer:
Gift, mission, prison
Beautiful lie
Racoons will almost eat anything. They are most accurately called...
1. carnivores
2. omnivores
3. herbivores
4. producers
The anwser is 2. Omnivores
DNA is composed of peating structural units
called
is the five-carbon sugar found in
DNA.
DONE
Answer:
Explanation:
if u mean repeating structural units of the DNA they are nucelotides or nucleotide bases.
and Yes, there is a five-carbon sugar in the DNA. It's called deoxyribose.
can the enzyme DNA polymerase be used to break down or build lactose?
True or false
Linkage and crossing over are inversely related.
Which parts of the biodome contain carbon?
give 5 application of Charles law
Answer:
Try out a turkey timer. Pop-up turkey thermometers work by applying Charles' Law. The thermometer is placed in the turkey. As the temperature rises and the turkey cooks, the air in the thermometer expands to pop the plunger
with reference to enzymes, what does "denatured" mean?
Answer:
Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function. Extreme temperature and the wrong levels of pH -- a measure of a substance's acidity or alkalinity -- can cause enzymes to become denatured.
Why do sex-linked traits follow different patterns of inheritance than other
traits?
help me.............
Answer:
Explanation:
The first two pictures show an ovum and a sperm so it is 1 for both boxes. The third picture shows embedding into the uterus wall and that is 6.
Answer:
1,1,6
Explanation:
1st pic is an egg so its 1
2nd pic is a sperm so its also 1
3rd pic is attaching 2 uterus wall so its 6
hope u dont mind me double-dipping :)
complementary strand of DNA?
DNA Strand 1: AATCGGTAC
Answer:
TTAGCCATG
Explanation:
Deoxyribonucleic acid (DNA) is a double helix molecule made up of two complementary polynucleotide strands oriented antiparallel to each other. Each nucleotide in both DNA strands is composed of a five-carbon sugar (deoxyribose), a phosphate group and a nitrogenous base. In DNA, there are four types of nitrogenous bases: Thymine, Guanine, Adenine and Cytosine (in RNA, Uracil replace Thymine). According to the base-pairing rules, Adenine always pairs with Thymine through two hydrogen bonds, whereas Guanine always pairs with Cytosine through three hydrogen bonds.
The difference between the bats in the United States with the Pd fungus and bats found in Europe and China with the Pd fungus was that A. the bats in the United States were immune to the fungus. B. the bats in the United States had a more deadly form of the fungus. C. the bats in Europe and China were dying at a faster rate. D. the bats in Europe and China were healthy.
Answer:
The correct answer is - D. the bats in Europe and China were healthy.
Explanation:
The white-nose disease of bats is caused by the Pseudogymnoascus destructans or Pd fungus that found in cold mines and caves of the bat. It is a fatal disease that leads to the destruction of the bat population in the United States, in north Calorina the population was dropped up to 99 percent. The bats found in Europe and China with the Pd fungus were healthy and do not cause any fatal disease in the population.
The weight of body is 420 N . Calculate it's mass..
Here,
Force = 420N
Gravity = 9.8m/s^2
Mass = ?
Now,
Force = Mass * Gravity
420 = Mass * 9.8
420/9.8 = Mass
Mass = 42.85Kg
I hope it's help you...
Mark me as brainliest...
Ecotourism can provide an incentive for local people to preserve the environment in order to attract more visitors, but sometimes development is done with little planning for long-term environmental impacts. On a small island in the Caribbean, a local group is considering opening a resort for ecotourism. If they wish to build a sustainable and ecofriendly business, what should be the next steps in their plan?
A. Investigate the ecological impacts and gather evidence on which to base their decisions
B. Hire an agent to locate a suitable property and start developing infrastructure
C. Market the development to investors and explain ecotourism to them to raise money for the resort
D. Determine what types of activities the resort will offer and hire staff
Answer: The next steps in their plan should be to (Investigate the ecological impacts and gather evidence on which to base their decisions). The correct option is A.
Explanation:
ECOTOURISM is defined as the visitation of individuals (tourist) to natural areas that conserve the environment and sustains the well-being of the local people. It has to do with the interaction of the biotic components of the natural environment by tourists. This has the advantage of providing an incentive for the local inhabitants but can cause a long term negative environmental impact of not properly planned.
Conservation of these natural resources improves the quality of lives. It enables the inhabitants to live in a clean and healthy environment (eco-friendly). To set up a tourism center, certain rules and regulations needs to be met in order to avoid endangering both the biotic and abiotic components of the ecosystem. Therefore these local groups should investigate the ecological impacts and gather evidence on which to base their decisions. This would help conclude if a particular selected environment is conducive.
What are wildfires? (With detail)
Answer:
A wildfire is an unplanned fire that burns in a natural area such as a forest, grassland, or prairie. Wildfires are often caused by human activity or a natural phenomenon such as lightning, and they can happen at any time or anywhere. In 50% of wildfires recorded, it is not known how they started.
Answer:
sự kiện lửa phát sinh trong một khu rừng, tác động hoặc làm tiêu hủy một số hoặc toàn bộ các thành phần của khu rừng đó.
Explanatin
Resources that humans have thanks to biodiversity are:
A.Textiles
B. Wood products
C. Compounds used in medicines
D. all of the above.
Answer:
D. tất cả các ý trên
Explanation:
draw the metaphase stage of mitosis in plant cell with chromosomes
Answer:
get a life sci study guide it will help u
36. Mitosis requires the chromosome to be replicated into______ copies.
a. 2
b. 6
c. 1
Answer:
Option a. "2"
Explanation:
Answer:
Mitosis requires the chromosome to be replicated into 2 copies.
option a is the answer
Explanation:
The cell separates the copied chromosomes to form two full sets (mitosis) and the cell divides into two new cells (cytokinesis). The period between cell divisions is known as 'interphase'.The genome is composed of a number of chromosomes—complexes of tightly coiled DNA that contain genetic information vital for proper cell function. Because each resultant daughter cell should be genetically identical to the parent cell, the parent cell must make a copy of each chromosome before mitosis
Sequence the steps in the chain of infection in the correct order. identify influenza, new patient comes in contact with sick patient, influenza struck (sick) patient, sick patient sneezes, new patient is infected, new patient inhales through the nose
Answer:
influenza struck (sick) patient
new patient comes into contact with sick patient.
sick patient sneezes
new patient inhales through nose
new patient is infected
Explanation:
Answer: influenza struck (sick) patient
new patient comes into contact with sick patient.
sick patient sneezes
new patient inhales through nose
new patient is infected
1. Describe the structure of DNA.
2. What does a nucleotide consist of?
3. What are the base-pairing rules?
4. If one DNA strand reads CCGTAATGCAT, what will be the sequence of the
complementary strand?
Answer:
DNA bases pair up with each other, A with T and C with G, to form units called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule. Together, a base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix.
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.
GGCATTACGTA
Explanation:
At a chemical synapse, the intensity of the stimulus is coded by _______. At a chemical synapse, the intensity of the stimulus is coded by _______. the amount of calcium that enters the axon terminal the amount of neurotransmitter released and the amount of calcium that enters the axon terminal the amount of neurotransmitter released the size of the action potential the size of the action potential and the amount of neurotransmitter released
Answer:
The correct answer is - the amount of neurotransmitter released and the amount of calcium that enters the axon terminal.
Explanation:
The intensity of the signals or stimulus depends on the amount of the neurotransmitter such as acetylcholine, dopamine and the amount of calcium that enters the axon terminal.
A neurotransmitter is a chemical that carries, boost or balance a signal and send stimulus or signals throughout the body. When an action potential reaches the nerve terminal calcium channels open and enters.
2.2.1
Differentiate between malnutrition and undernutrition.d
(2)
2.2.2
Which disease is caused by deficiency of vitamin C?
223
Why did the sailors suffer from the disease mentioned in OUESTION
Explanation:
Malnutritionin broad sense means bad nutrition.
Undernutrition is the taking in of inadequate amounts of major food substancesleadind to deficiency diseases eg. kwashiorkor.
Defecieny disease of inadequate amounts of Vitamin C include:
Scurvy: swelling of gum and bleeding around teeth.Body weakness, pains, swelling of joint and poor healing of woundsSailors suffer from scurvy and body w weakness because they don't eat enough Vitamin C in other words they don't eat enough fresh fruits e.g lemon, oranges, pawpaw and green vegetables
