In the sex determination pattern of XX-XY type, what is the genotype of male and female?
a) male: XX and female: XY
b) male: XX and female: XX
c) male: XY and female: XX
d) male: XY and female: XY
Explanation: this type is the reverse of XY-XX type
In XX-XY 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 female eggs have X chromosome while half have Y chromosome
In XX-XY 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 sperms have same X chromosome
In XX-XY type of sex determination pattern, sex of the offspring depends on which of the following?
a) female (XY)
b) male (XX)
c) both a and b
d) none of them
In XX-XY type of sex determination pattern, what will be the sex of the offspring if X carrying egg is fertilized by sperm having X chromosome?
a) male
b) female
c) both a and b
d) none of them
Explanation: X from sperm and X from egg unite and form XX which will be male
In XX-XY type of sex determination pattern, what will be the sex of the offspring if Y carrying egg is fertilized by sperm having X chromosome?
a) male
b) female
c) both a and b
d) none of them
Explanation: Y chromosome from egg and X from sperm unite and form XY which will be female in XX-XY type
