Question

Sex determination in human being is ________

• A. XX-XX Type
• B. XX-XO type
• C. XX-XY types
• D. XO-XX

Answer 1

The correct option is C XX-XY types

In humans, the males are heterogametic as they have XY sex chromosomes, so they make 50% sperms with X chromosome and 50% sperms with Y chromosome. Females are homogametic. All gametes made by them have X chromosomes. So, humans show XX-XY type of sex determination.

Hence, the correct answer is 'XX-XY type'.