MHT CET 202624 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 24 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Principles of Inheritance and Variation
MHT CET 2026 · 24 April · Evening Shift · Biology · Principles of Inheritance and Variation
With respect to Sex determination pattern in Birds which of the...
With respect to Sex determination pattern in Birds which of the following statement is true?
Options
- AFemales are homogametic.
- BMales are heterogametic.
- CThe sex of an individual depends on the type of egg fertilized by the sperm.
- DThe sex of an individual depends on the type of sperm that fertilizes the egg.
Correct answer
C. The sex of an individual depends on the type of egg fertilized by the sperm.
Step-by-step solution
In birds, the sex determination mechanism is of the ZW type.
Males are homogametic and have the ZZ sex chromosome constitution, producing only one type of sperm carrying the Z chromosome.
Females are heterogametic and have the ZW sex chromosome constitution, producing two types of eggs: one carrying the Z chromosome and the other carrying the W chromosome.
Since the sperm always carries a Z chromosome, the sex of the offspring is determined by the type of egg (Z or W) that is fertilized by the sperm.
Answer: The sex of an individual depends on the type of egg fertilized by the sperm.
Males are homogametic and have the ZZ sex chromosome constitution, producing only one type of sperm carrying the Z chromosome.
Females are heterogametic and have the ZW sex chromosome constitution, producing two types of eggs: one carrying the Z chromosome and the other carrying the W chromosome.
Since the sperm always carries a Z chromosome, the sex of the offspring is determined by the type of egg (Z or W) that is fertilized by the sperm.
Answer: The sex of an individual depends on the type of egg fertilized by the sperm.