The Living World 8th Edition by George Johnson

تمرين 13

In organisms that have sexual life cycles, there is a time when there are
A) 1 n gametes (haploid), followed by 2 n zygotes (diploid).
B) 2 n gametes (haploid), followed by 1 n zygotes (diploid).
C) 2 n gametes (diploid), followed by 1 n zygotes (haploid).
D) 1 n gametes (diploid), followed by 2 n zygotes (haploid).
In many organisms, the haploid stage of the life cycle is dominant, with adult haploid individuals and only a brief diploid stage. No one would argue that the haploid individuals of these organisms are not alive. How then would you support or contest a statement that haploid human sperm or egg cells are not alive individuals?