Learning Objectives Cell Division
How many chromosomes are present in a human somatic cell? In a gamete?
What are: chromatin, sister chromatids, centromeres, centrosomes, centrioles, mitotic spindle?
3. Name each phase of mitosis and describe what is happening.
What happens at G1, S, and G2 phases of Interphase in preparation for mitosis?
At what stage of mitosis do the chromosomes line up in the middle of the cell
What is the role of mitosis in living organisms?
Describe cytokinesis and Plant and Animal cells.
Define the following: homologous chromosomes, autosomes, chiasmata, synapsis, haploid, diploid, tetrad, recombinant chromosomes, n, 2n.
Describe what happens to the chromosomes of a cell during each stage of meiosis (I and II).
When do haploid cells first form during the process of meiosis?
What is a gamete? A zygote? How many chromosomes do they have (n or 2n)? Are they haploid or diploid cells?
Describe two different aspects of meiosis that contribute to genetic variation between individuals.
What are the differences between Mitosis and Meiosis?