$A$ person may have one gene for normal haemoglobin and one gene for sickle cell haemoglobin. This heterozygous condition is called:

In hexaploid wheat, what are the haploid $(n)$ and basic $(x)$ chromosome numbers?

Which of the following is a sex-influenced character?

When two genetic loci produce identical phenotypes in both $cis$ and $trans$ configurations,they are considered to be:

Which of the following statements are correct?
$i$. $X$ chromosome has a large amount of euchromatin.
$ii$. Heterochromatin is genetically inert.
$iii$. Both $X$ and $Y$ chromosomes are homologous.
$iv$. Crossing over does not take place in sex chromosomes in females.
Choose the correct option.

Milk secretion and beard growth,both the traits are