11.4: What Role Does Cell Division Play in a Sexual Life Cycle?
Answer: in two different ways:
1. Asexual reproduction involves mitosis
2. Sexual reproduction involves mitosis and meiosis
Asexual reproduction by mitosis results in genetic constancy
Based on the mitotic division of the nucleus. Some organisms that reproduce asexually: single-
celled yeast, aspen in forest.
Sexual reproduction by meiosis results in genetic diversity
Sexual reproduction requires gametes created by meiosis; two parents each contribute one
gamete to each of their offspring
Somatic Cells: body cells not specialized for reproduction, each contain two sets of
chromosomes. One chromosome from each pair comes from each of two parents.
i.e. in humans with 46 chromosomes, 23 from each parent