Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET Medical202624 April 2026Evening ShiftBiologyPrinciples of Inheritance and VariationActual

With respect to Sex determination pattern in Birds which of the following statement is true?

Options

  1. AFemales are homogametic.
  2. BMales are heterogametic.
  3. CThe sex of an individual depends on the type of egg fertilized by the sperm.
  4. 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 se

Practice Principles of Inheritance and Variation on Quantrex Academy →

More from Principles of Inheritance and Variation

Point mutation is __________ 2026Choose the group of correct statements regarding sex-linked inheritance. A) Y-linked genes are inherited only in males. B) X-linked genes are inherited only in females. C) Colourbl 2026How many pair/s of contrasting characters in the pod of pea were considered by Mendel in his experiments? 2026Development of feminine characters and no spermatogenesis are characteristic feature of people with __________. 2026According to Mendel, a gamete generally contains __________. 2026The number of linkage groups of a particular species corresponds to its _________ number of chromosomes. 2026A man, homozygous dominant for widows peak (WW), marries a woman with straight hairline homozygous recessive (ww). How many of their off springs will inherit straight hair line? 2026Extra copy of 21st chromosome causes _________ in human. 2026 Full Principles of Inheritance and Variation list All MHT CET Medical PYQs