In the sex
determination pattern of XO-XX type, what is the genotype of male and female?
a) male: XX and female: XO
b) male: XX and female: XX
c) male: XO and female: XX
d) male: XO and female: XO
In XO-XX type of sex determination pattern, which of the following has one missing sex chromosome?
a) male
b) female
c) both a and b
d) none of them
Explanation: male has only one X chromosome
In XO-XX type of sex determination pattern, which of the following is are heterogametic?
a) male
b) female
c) both a and b
d) none of them
Explanation: heterogametic means having different gametes; half of the male sperms have X chromosome while half without sex chromosome
Which of the following gamete is called nullo gamete?
a) a gamete with one sex chromosome
b) a gamete with two sex chromosomes
c) a gamete without sex chromosome
d) none of these
In XO-XX type of sex determination pattern, which of the following has two sex chromosomes?
a) male
b) female
c) both a and b
d) none of them
Explanation: female has two X chromosomes
In XO-XX type of sex determination pattern, which of the following is are homogametic?
a) male
b) female
c) both a and b
d) none of them
Explanation: homogametic means having similar gametes; all the eggs have X chromosome
