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What aligns and segregates during meiosis I?

What aligns and segregates during meiosis II?

In what way is prophase I of meiosis similar to prophase of mitosis? How is it different?

In what way is metaphase I of meiosis similar to metaphase in mitosis? How is it different?

Which is more similar to mitosis (meiosis l or meiosis II)? What is the important similarity?

What is the significance of meiosis in terms of the genetic content of the cells produced? In terms of the genetic makeup of the whole species?

What are two features of meiosis that result in the production of genetically distinct gametes?

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Sixta Kovacek
Sixta KovacekLv2
28 Sep 2019

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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?

40

20

10

5

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

Title: Meiosis Lab

Part 1: Modeling Meiosis Without Crossing Over (reformat as needed)

Take photos of the following stages of your meiosis bead simulation. Insert and label the following images:

Meiosis 1: Prophase I and Metaphase I

Meiosis 2: Metaphase II and Telophase II

Part 2: Modeling Meiosis With Crossing Over (reformat as needed)

Take photos of the following stages of your meiosis bead simulation. Insert and label the following images:

Meiosis with Crossing Over: Metaphase I and Telophase II

Questions รขย€ย“ use the lab Introduction, your textbook and other sources to answer the following.

What is the state of DNA at the end of meiosis I? Are the chromosomes replicated or unreplicated? Diploid or haploid?

Why are chromosomes important?

How are Meiosis I and Meiosis II different?

Name two ways meiosis contribute to genetic recombination or genetic variety.

Why do you use non-sister chromatids to demonstrate crossing over? What would happen if you crossed over sister chromatids?

How many chromosomes were present in your simulation when meiosis I started?

Why is it necessary to reduce the chromosome number in gametes, but not in other cells of an organism?

If humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would expect to find in the following:

Sperm

 Egg

Daughter cell after mitosis

Daughter cell after meiosis

Investigate a disease that is caused by a chromosomal mutation due to nondisjunction. When does the mutation occur? What chromosome is affected? What are the consequences?

1- distinguish between mitosis and meiosis:


mitosis ormeiosis completeafter one division?

mitosisor meiosis require2 successive division?

mitosis or meiosis duringanaphase , sister cromaids separate?

mitosis or meiosis duringanaphase I, homogous chromoses separate ?

mitosis or meiosis resultsin daughter cells with the diploid number of chromosomes?

mitosis or meiosis resultsin daughter cells with the diploid numer of chromosomes?

mitosis or meiosis inanimal, occurs in the somatic (body) cells?

mitosis or meiosis inanimals, occurs in the formation of gametes ?


2- what nonisjunction and what mightresult from it?

3- name and define 2 events that areunique to prophast I of meiosis?

3- name 2 events ofmeiosis that serve of genetic variation?

4-how is cell cycle controlled?

5-what is purpose of meiosis?

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