Which Of the Following is Inheritable?

a.An Altered Gene in Sperm.

b.An Altered Gene in Udder cell

c.An Altered Gene in Skin cell
 

An altered gene in sperm. Since the sperm fuses with the egg to form zygote. The zygote carries the gene of both the parental nuclei. So the gene is transferred from the parents to the offsprings so it is heritable.