Answer:
A) Cytomegalovirus
Explanation:
Cytomeglovirus in a very frequent infection worldwide and women have a high tendency to become contaminated with the consequent consequences of it for the fetus in case of becoming pregnant. It is considered a highly teratogenic infection. In general, infected women are asymptomatic and only the presence of the disease in the fetus is discovered through confirmatory ultrasound studies. Hearing and neurological development disorders occur only in 10% to 15% of children involved.
I don’t see anything in the following. Repost the question
Answer: Nonsense mutation. A nonsense mutation is also a change in one DNA base pair. Instead of substituting one amino acid for another, however, the altered DNA sequence prematurely signals the cell to stop building a protein. This type of mutation results in a shortened protein that may function improperly or not at all.
Based on Dominance for a heterozygous cross 75% of the offspring would have the dominant phenotype For a homozygous cross it would 100%.