Answer:
True.
Explanation:
Because genetic mutations effect not only humans but animals too. Its how things evolve, like humans. So yes.
Answer:
Option A , The allele for yellow is dominant to white
Explanation:
It is given that 23 percent of the sheep have white fat and 77 percent have yellow fat.
Thus, it is clear that sheeps with yellow fat is a dominant characteristics.
Usually, the frequency of homozygous recessive allele in a given population is represented by 
and here 
Frequency of allele for white fat 
While frequency of homozygous dominant allele and heterozygous dominant allele is represented by 
And here 
Allele for yellow fat 
Hence, option A is correct.
Yes.
The kidney is the part of the internal organ that help in the production of urine. And a normal urine should be yellowish in color.
Therefore, in a situation whereby the urine is seen to contain some red tiny droplets, specifically means the presence of an infection to the kidney.
In this case, a cloudy urine might mean the presence of white blood cell which stipulates the presence of infection.
Answer:
There are two types of variables that can lower internal validity: extraneous variables, which are any factors that are in the experiment but not being studied, and confounding variables, which are related to the independent variable and affect the dependent variable.