In Mr. Kapoor,there is a pair of autosomal genes $Bb$ and a sex-linked factor $d$. What will be the proportion of $Bd$ in his sperm?

Explain the following terms with examples:
$(a)$ Co-dominance
$(b)$ Incomplete dominance

For the expression of traits,genes provide only the potentiality and the environment provides the opportunity. Comment on the veracity of the statement.

Which one of the following is not a parasitic adaptation?

In maize, albinism is caused by the effect of:

Select the group of $CORRECT$ statements.
$I$. If phenotype of offsprings shows only the dominant trait then the parent plants are heterozygous.
$II$. $A$ true breeding line shows stable trait inheritance and expression for several generations.
$III$. In mendelian experiment material,contrasting characters can be easily recognized.
$IV$. When a single gene controls two (or more) different traits,it is called polygene.
$V$. When interactions occurs between the alleles of different genes present on the same or different chromosome it is called intragenic interaction.