BIO SCI 93 Study Guide - Final Guide: Tortoiseshell, Equine Coat Color, Sister Chromatids

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BIO SCI 93 Full Course Notes

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There is one best answer for each question. Questions 2 - 34 are worth 2 points each for a total of 66 points: you have version a. Please bubble in a for question 1. (0 points: mitosis, in contrast to meiosis, produces gametes, requires pairing of replicated homologous chromosomes, occurs in somatic cells, has crossing over before anaphase, results in haploid cells. Mitosis is the form of cell division used by all somatic cells where one cell divides to produce two identical cells. Meiosis is a specialized form of cell division that produces only gametes. Mitosis does not involve pairing of chromosomes or crossing over, this occurs only in meiosis. Many students do not recognize that the first division in meiosis is the division that reduces ploidy. During meiosis i the homologous replicated chromosomes, one originally from the mother and one from the father, pair and line up on the metaphase plate.

Related Questions

What is the purpose of meiosis?

To enable an organism to produce gametes

To allow for growth

To allow an organism to replace damaged cells

Question 2

Select one answer.

10 points

Mitosis results in ________ and meiosis results in ________.

gametes, somatic cells

gametes, gametes

somatic cells, somatic cells

somatic cells, gametes

Question 3

Select one answer.

10 points

Which of the following tasks is accomplished through the processof meiosis?

Cell growth

Production of sperm or eggs

Replacement of dysfunctional cells

Question 4

Select one answer.

10 points

What advantage does sexual reproduction have over asexualreproduction?

All other selections are true.

Sexual reproduction provides more genetic variability

Sexual reproduction doubles the number of chromosomes in aspecies

Sexual reproduction is more efficient

Question 5

Select one answer.

10 points

Crossing over occurs between homologous chromosomes during whatstage of cell division? (Read each option carefully.)

Prophase I of meiosis

Prophase of mitosis

Prophase II of meiosis

Interphase

Question 6

Select one answer.

10 points

Corn has 20 chromosomes. When corn undergoes meiosis how manychromosomes are found in the gametes?

Question 7

Select one answer.

10 points

Homologous chromosomes separate and are pulled to opposite sidesof the cell during what stage of cell division? (Read each optioncarefully.)

Metaphase I of meiosis

Anaphase II of meiosis

Anaphase I of meiosis

Anaphase of mitosis

Question 8

Select one answer.

10 points

Mitosis results in ______ cells and meiosis results in _______cells.

diploid, haploid

haploid, diploid

diploid, diploid

haploid, haploid

jadepug655

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!

1. Does the parent cell in Mitosis start off as diploid or haploid? Are the resulting cells at the end of Mitosis diploid or haploid?

2.Does the parent cell in Meiosis start off as diploid or haploid? Are the resulting cells at the end of Meiosis diploid or haploid?

3.How does the number of chromosomes in sperm/egg compare with the number of chromosomes in the parent cell?

1. Identify whether each process below occurs during mitosis, meiosis,or both.

b. Haploid cells are formed -

c. Cell division occurs only once

d. Homologous chromosomes pair

e. 4 haploid cells are the final result

g. Cell division occurs twice -

h. Replicated chromosomes line up in the middle of the cell

i. 2 diploid cells are the final result _

BIO SCI 93 Study Guide - Final Guide: Tortoiseshell, Equine Coat Color, Sister Chromatids

BIO SCI 93 Full Course Notes

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