9. Mitosis and Meiosis

Our closest primate relative, the chimpanzee, has a diploid number of 2n = 48. For each of the following stages of M phase, identify the number of chromosomes present in each cell.

Mitotic metaphase

Our closest primate relative, the chimpanzee, has a diploid number of 2n = 48. For each of the following stages of M phase, identify the number of chromosomes present in each cell.

Early mitotic prophase

Our closest primate relative, the chimpanzee, has a diploid number of 2n = 48. For each of the following stages of M phase, identify the number of chromosomes present in each cell.

End of mitotic telophase

What role do the following cellular components play in the storage, expression, or transmission of genetic information?

(a) Chromatin

(b) Nucleolus

(c) Ribosome

(d) Mitochondrion

(e) Centriole

(f) Centromere

Discuss the concepts of homologous chromosomes, diploidy, and haploidy. What characteristics do two homologous chromosomes share?

Describe the organization of the interphase nucleus. Include in your presentation a description of chromosome territories, interchromatin compartments, and transcription factories.

If two chromosomes of a species are the same length and have similar centromere placements and yet are not homologous, what is different about them?

Describe the events that characterize each stage of mitosis.

How are chromosomes named on the basis of their centromere placement?

Contrast telophase in plant and animal mitosis.

Describe the phases of the cell cycle and the events that characterize each phase.

Describe the role of the following structures or proteins in cell division:

Microtubules

Describe the role of the following structures or proteins in cell division:

Synaptonemal complex

Describe the role of the following structures or proteins in cell division:

Kinetochores

Describe the role of the following structures or proteins in cell division:

Cohesin protein