E is the gene for brown eye colour and an is the gene for blue eye colour. which gene is (1) recessive, and (2) dominant?
"The sex of a newborn child is a matter of chance and none of the parents may be considered responsible for it". Draw a flow chart showing determination of sex of a newborn to justify this statement.
A zygote which has inherited an X chromosome from the father will develop into :
(a) baby boy
(b) baby girl
(d) either boy or girl
The number of pair(s) of sex chromosomes in the zygote of humans is :