Answer:
Option D
Explanation:
Given
Justin has type A blood . Both the parents of Justin has AB blood type
Brittany has type B blood and both the parents of Brittany has AB blood type
This make it clear that -
Genotype of Justin is AA
Genotype of Brittany is BB
Now if Justin is crossed with Brittany , following blood groups in offspring is possible -
AA * BB
AB, AB, AB, AB
Thus, none of the offspring will have A blood group. Thus the chances that Justin and Brittany's son has type A blood is 
%
Option D is correct
Explanation:
Pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder.
- There are two such muscles on each side of the sternum (breastbone) in the human body:
1. pectoralis major and
2. pectoralis minor.
Answer:
the chance they will have a son that has hemophilia is 50%
the chance they have a daughter that has hemophilia is 50%
Explanation:
H - normal allele
h - hemophilia allele
A woman who is a carrier of the hemophilia allele - X(H)X(h)
A man that is normal for hemophilia allele - X(h)Y
Punnet Square:
- X(H)X(h) - <em>Daughter</em>
- X(H)Y -<em> Son</em>
- X(h)X(h) - <em>Daughter</em>
- X(h)Y - <em>Son</em>
Answer:
i think it is d. sorry if its wrong
Answer:
The statement is true.
Explanation:
The DNA structure had been studied for years, and there were even some theories, like the three-stranded DNA structure. Nevertheless, until Watson and Crick started to develop the actual structure of the DNA, with the help of Rosalind Franklin's pictures, there wasn't a strong theory that could explain some of the DNA properties.
