Answer:
the first one
Explanation:
So the predicted offspring genotypes are 50% Hh and 50% hh
so there is a 50% chance that they will have no horns and and aa 50% chance that they wont
Answer:
Chromosome are part of DNA cells and threads like structure which contains the human genetic coded information for the humans . humans have total 46 chromosomes .
Explanation:
Answer:
Cystic fibrosis mutation is recessive to normal allele because only one functional or normal allele is enough to produce a functional protein. So, if mutation is present in one allele then also, a normal protein can be made from normal allele. The presence of normal protein prevents the expression of disease.
In addition, mutated allele only results in the loss of function of protein which can be compensated by the expression of normal allele. It does not add any toxic effect to the protein. Consequently, the disease is inherited in autosomal recessive fashion.
In contrast, Huntington mutation not only alters the structure of the functional protein but also adds toxicity to it. The altered protein is enable to interact with 100s of other proteins and inhibit or decrease their function. So, if only one allele is present then also, the mutated protein will be produced and it will result in the phenotype. Consequently, it is inherited as autosomal dominant fashion.
