Sex determination by chromosomal difference in man and Drosophila is by mechanism called

Question

Sex determination by chromosomal difference in man and Drosophila is by mechanism called (A) XX-XY (B) XX-XO (C) ZZ-ZW (D) Both (a) and (b)

Tardigrade Admin · Accepted Answer

In humans and in Drosophila the males have one X and one Y-chromosome, whereas female have a pair of X-chromosomes besides autosomes. In birds. ZZ-ZW mechanisms and in grasshopper, sex determination mechanism is XX-XO type.

Q. Sex determination by chromosomal difference in man and Drosophila is by mechanism called

XX-XY

XX-XO

ZZ-ZW

Both (a) and (b)

In humans and in Drosophila the males have one $X$ and one $Y$ -chromosome, whereas female have a pair of $X$ -chromosomes besides autosomes. In birds. $ZZ - Z W$ mechanisms and in grasshopper, sex determination mechanism is $XX - XO$ type.

Q. Sex determination by chromosomal difference in man and Drosophila is by mechanism called

XX-XY

XX-XO

ZZ-ZW

Both (a) and (b)

In humans and in Drosophila the males have one X and one Y-chromosome, whereas female have a pair of X-chromosomes besides autosomes. In birds. ZZ−ZW mechanisms and in grasshopper, sex determination mechanism is XX−XO type.

In humans and in Drosophila the males have one $X$ and one $Y$ -chromosome, whereas female have a pair of $X$ -chromosomes besides autosomes. In birds. $ZZ - Z W$ mechanisms and in grasshopper, sex determination mechanism is $XX - XO$ type.