What is the ratio between male and female offspring in XX-XY type sex determination pattern?
a) 1:2
b) 1:1
c) 2:1
d) 1:3
Which of the following follow/s XY-XX type sex determination pattern?
a) human
b) Drosophila
c) moths and birds
d) both a and b
Presence of “SRY” gene on Y-chromosome is necessary for maleness in XY-XX type sex determination pattern in
a) human
b) Drosophila
c) both a and b
d) none of them
Absence of Y-chromosome leads to …… in XY-XX type sex determination pattern.
a) normal male
b) normal female
c) sterile male
d) sterile female
Absence of Y-chromosome leads to …… in XY-XX type sex determination pattern.
a) normal male
b) normal female
c) sterile male
d) sterile female
What is the genotype for Turner’s syndrome in human?
a) XX
b) XY
c) XO
d) XXY
Explanation: it produces sterile female through non-disjunction
