BIOL207 Study Guide - Midterm Guide: Telophase, Meiosis, Cytokinesis

59 views2 pages

goldleopard391

1 Nov 2016

School

University of Alberta

Department

Biology (Biological Sciences)

Course

BIOL207

Professor

Kirst King- Jones

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Remember that mitosis duplicates a cell with 46 chromosomes into 2. Haploid cells are those that have 23 chromosomes therefore, half the full set. The main goal of meiosis is to have specialized diploid cells split in half twice daughter cells that are identical and also have 46 chromosomes. As we know humans have 4 chromosomes, which are grouped into 23 pairs. One of the chromosomes in the pair is from your mom and the other is from your dad. The pairs of chromosomes are known as homologous pairs. While they aren"t identical to one another obviously, they contain versions of the same gene i. e. alleles. Chromosome 1 from mom and dad would form a homologues pair. of chromosomes. Sperm and eggs and results in 4 separate cells, which are genetically unique from one another. This process undergoes the same phases as mitosis but has 2 rounds of each:

Related Questions

Which of the following statements are false about the comparison between mitosis and meiosis? Select all. that apply.

1.Two cytokinesis events occur in mitosis but only one in meiosis

2.Meiosis results in half the number of homologous chromosome pairs as the original cell whereas mitosis has the same number as the original cell

3. Mitosis occurs in somatic cells while meiosis only occurs in germ cells

4.Both haploid and diploid cells undergo mitosis and meiosis

5.Both mitosis and meiosis have one round of DNA replication in the preceding Interphase period

6. Chromosomes undergo disjunction in mitosis but not in meiosis

7.Meiosis leads to a reductive division in the number of chromosomes whereas mitosis does not

Thank you!

Which of the following statements are false about the comparison between mitosis and meiosis? Select all. that apply. Multiple answers: You can select more than one option A Two cytokinesis events occur in mitosis but only one in meiosis B Meiosis results in half the number of homologous chromosome pairs as the original cell whereas mitosis has the same number as the original cell C Mitosis occurs in somatic cells while meiosis only occurs in germ cells D Both haploid and diploid cells undergo mitosis and meiosis E Both mitosis and meiosis have one round of DNA replication in the preceding Interphase period F Chromosomes undergo disjunction in mitosis but not in meiosis G Meiosis leads to a reductive division in the number of chromosomes whereas mitosis does not Unanswered

1). Explain the significance of the fact that gametes contain half of the chromosome complement of somatic cells. Tell me something about variation, if you have a sibling (if you don't imagine you do) - how is your sibling's genetic make-up similar and/or different from yours? What about your mom and dad?

2). Explain the terms reductional division and equational division. What is reduced or kept equal? To which nuclear divisions do these terms refer?

3). What is the diploid number (2n = ?) of an organism if it has
a) 12 chromosomes at Anaphase of Mitosis?
b) 12 chromosomes at Anaphase I of Meiosis?
c) 12 chromosomes at Anaphase II of Meiosis?

4). Compare/contrast Metaphase I of Meiosis with Metaphase of Mitosis.

5). What are the two mechanisms of variation in Meiosis, and during which stage(s) does each occur?

6). Draw a diagram of a bivalent and label the following parts: centromere, sister chromatids, non-sister chromatids, homologous chromosomes, chiasma.

7). A diploid cell has 1 pair of acrocentric chromosomes (Chromosome 1) and 1 pair of submetacentric chromosomes (Chromosome 2).
Â· Gene X is on Chromosome 1. Gene Y is on the short arm of Chromosome 2 and Gene Z is on the long arm of Chromosome 2.
Â· The maternal chromosomes have the X, y, z alleles, whereas the paternal chromosomes have the x, Y, Z alleles.
Draw these chromosomes, labeling ALL alleles, as they might appear in Metaphase I of Meiosis.

BIOL207 Study Guide - Midterm Guide: Telophase, Meiosis, Cytokinesis

Document Summary

Get access

Related Documents

BIOL207 Lecture Notes - Oviduct, Cell Division, Organism

BIOL207 Final: BIOL 207 Entire Term Notes

BIOL207 Lecture Notes - Lecture 2: Anemophily, Blastocyst, Prenatal Development

Related Questions