The traits like height, weight, color of the eye and hair exist in a large number but in slightly varied forms. These different forms arise due to the fact that they are controlled and regulated by a number of genes. Each of the gene tends to contribute to forming the final phenotype of the organism. These genes are known as polygenes and they belong to the class of non-epistatic genes.
The eye color is majorly controlled by two genes but it is known that there are fourteen more genes that interact additively with them in order to influence the phenotypic trait. Furthermore, the type 2 diabetes is caused by polygenes.
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
A woman who is heterozygous, Bb, has brown eyes;
Explain why familial breast cancer shows a dominant pattern of inheritance in
How is an F′ factor different from an F factor?
With regard to the timing of conjugation, explain why the recipient
The raw material for evolution is random mutation. Discuss whether or
Why is an antibody used in this experiment? From
Explain the type of speciation (allopatric, parapatric, or sympatric
In fruit flies, curved wings are recessive to straight wings,
A recessive allele in mice results in an unusally long neck.
