Reproduction numbers

Exercise and reference answers

Questions

1. Answer

   23

   Question

   Chromosomes in a human gamete

2. Answer

   14

   Question

   Day of the cycle when ovulation happens

3. Answer

   9

   Question

   Week from which the embryo is called a foetus

4. Answer

   3

   Question

   Shortest number of days a period usually lasts

Instructions

Type the number only.

Explanation