BIO 202 Chapter 13: Chapter 13 Learning Objectives

52 views6 pages

Document Summary

Dna sequences are not identical and the protein products that are specified by the genes are not identical either. We have pairs of homologous chromosomes, chromosome 1 from our mom and chromosome 1 from our dad; same for all diploid cells. The corresponding homologous chromosomes pair up with one another so they could separate. All chromosomes going into meiosis already exist as a pair of sister chromatids. When meiosis i begins, there are 92 chromosomes. At the end of meiosis i, there are two daughter cells each consisting 46 chromosomes. At the end of meiosis ii, there are four daughter cells each consisting of 23 chromosomes. Meiosis ii separation of sister chromatids; same thing as mitosis. Random fertilization 8 million possible gametes from mom and 8 million possible gametes from dad, then the overall number of possible zygotes is (8 mil)(8 mil) = 70 trillion.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related textbook solutions

Related Documents

Related Questions