Question

Which of the following statements is a feature of primitive karyotype?

• A. 1) Asymmetric chromosomes w.r.t centromere
• B. 2) A few chromosomes with median centromere
• C. 3) A large difference of size between the smallest and largest chromosome
• D. 4) A large number of metacentric chromosomes

Answer 1

The correct option is A 1) Asymmetric chromosomes w.r.t centromere

• In most vertebrates and invertebrates, germ cells produce female and male gametes after one or several rounds of asymmetric cell division.
• Germline-specific features are used for the asymmetric segregation of fates, chromosomes and size during gametogenesis.
• Hence, Asymmetric chromosomes w.r.t centromere is a feature of primitive karyotype.
• So, the correct answer is 'Asymmetric chromosomes w.r.t centromere'.