Count the chromosomes

Exercise and reference answers

Questions

1. Answer

   46

   Question

   Chromosomes in a normal human cell?

2. Answer

   22

   Question

   Pairs of autosomes in a human cell?

3. Answer

   21

   Question

   Which chromosome is tripled in Down's syndrome?

4. Answer

   14

   Question

   How many true-breeding varieties did Mendel use?

Instructions

Type the number only.

Explanation