The Y and A genes are closely linked on the same chromosome

The Y and A genes are closely linked on the same chromosome and little recombination occurs. An individual has the genotype shown below: Y A ya The parallel lines represent homologous chromosomes. What is true about the gametes this individual can produce? yA and Ya gametes will outnumber YA and ya gametes YA and ya gametes will outnumber yA and Ya gametes YA, ya, Ya and yA gametes will be produced in equal numbers

Solution

If the two genes or very close on a single chromosome it is called linked gene.

Linked genes inherited together.

Is because they have very less chance to crossing over with the homologous chromosome at the time segregation.

As given that both the homologous chromosome contain homozygous dominant (YA) and homozygous receive (YA) condition. They will be maximally inherited together without segrigation.