What will be the phenotype of XO genotype in Drosophila?
a) normal male
b) normal female
c) sterile male
d) sterile female
Explanation: Y chromosome is not necessary for maleness in case of Drosophila
What will be the phenotype of XXY genotype in humans?
a) normal male
b) normal female
c) sterile male
d) sterile female
Explanation: it is called Klinefelter’s syndrome
What is the
genotype for Klinefelter’s syndrome in human?
a) XX
b) XY
c) XO
d) XXY
Explanation: it produces sterile male through non-disjunction
What will be the phenotype of XXY genotype in Drosophila?
a) normal male
b) fertile female
c) sterile male
d) sterile female
In Drosophila……..is/are female determining and the……..is/are male determining.
a) X-chromosome-----Y-chromosome
b) Y-chromosome---X-chromosome
c) X-chromosome---autosomes
d) autosomes---Y-chromosome
In humans……..is/are female determining and the……..is/are male determining.
a) X-chromosome-----Y-chromosome
b) Y-chromosome---X-chromosome
c) X-chromosome---autosomes
d) autosomes---Y-chromosome
