Inbreeding depression is a phenomenon in which the organisms that are closely related to each other through ancestral basis, are allowed to mate. But when they produce homozygotes, they are not fit for the population, and hence, the reproductive success of a population is decreased. When a population is small, inbreeding is quite common and the deleterious alleles are easily passed on.
But this lowers the chances of survival and reproduction in the next generation. On the contrary, outbreeding has many positive aspects as it produces a higher proportion of viable offspring. A large population may carry the recessive deleterious alleles but is unable to give rise to such individuals as those alleles are rarely expressed.
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.