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MA_775_DIABLO [31]
3 years ago
8

Down syndrome occurs when an individual has an extra copy of chromosome 21. This

Biology
1 answer:
Digiron [165]3 years ago
6 0

Answer:

C. A mutation

Explanation:

Down syndrome is a genetic disorder in which there is a partial or full extra chromosome in a person. Genetic disorders are caused by some sort of mutation or combination of mutations.

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Selective pressures created by environmental factors can lead to success of __________ individuals in a population.
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There are 100 cats in a population that follows hardy-weinberg conditions. 4 cats display a recessive white coat color. how many
mr Goodwill [35]

We know that Hardy-Weinberg conditions include the following equations:


p^{2}+2pq+ q^{2}=1


where p+q=1


And where p = dominant, and q = recessive; this means that p^{2} is equal to the homozygous dominant, 2pq is the heterozygous, and q^{2} is the homozygous recessive .


So we have 100 total cats, with 4 having the recessive white coat color. That means we have a ratio of \frac{4}{100} or 0.04. Let that equal our q^{2} value.


So when we solve for q, we get:


q^{2}=0.04

q=\sqrt{0.04} =0.2


Now that we have our q value, we can use the other equation to find p:


p+q=1


p+0.2=1


p=0.8


So then we can solve for our heterozygous population:


2pq=2(0.8)(0.2)=0.32


This is the ratio of the population. So we then multiply this number by 100 to get the number of cats that are heterozygous:


0.32*100=32cats


So now we know that there are 32 heterozygous cats in the population.

8 0
3 years ago
A farmer is being troubled by coyotes eating his sheep. in an attempt to solve the problem, he kills a sheep and laces its body
Misha Larkins [42]
The farmer is attempting to apply the principle of conditioned taste aversions to accomplish his objectives. Conditioned taste aversion occurs when an animal associates the taste of a certain food with symptoms caused by a toxic, spoiled, or poisonous substance. Generally, taste aversion is developed after ingestion of food that causes nausea, sickness, or vomiting.Tate aversions is an important principle that help us better understand animals and people tend to form one pairing associations between a certain stimuli, unlike other classical conditioning examples, for it one eats a food and becomes ill, he or she is predisposed to avoid the substance.
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The picture represents a protein in the stomach being broken down into individual amino acids. Which is mixed with proteins to b
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I think it’s enzymes
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3 years ago
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In cats, there are two types of ears: normal and curly. A curly-eared cat mated with a normal- eared cat, and all of the kittens
sp2606 [1]

Answer:

In cats, there are two types of ears: normal and curly. A curly-eared cat mated with a normal- eared cat, and all of the kittens had curly ears. Are curly ears a dominant or recessive trait? Explain.

CC x cc = Cc, Cc, Cc, and Cc 4:0

All kittens have curly ears, this is as a result of the dominance of curly ears to normal ears that is recessive

Explanation:

6 0
3 years ago
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