Meiosis

Question 1

Homologous chromosomes are separated.

Revolt · Accepted Answer

anaphase I; Homologous chromosomes are separated.: anaphase I; Homologous chromosome are paired.: prophase I; Nuclear envelopes form around separated chromosomes.: telophase I; Homologous chromosomes line up on the equator.: metaphase I

Question 2

Homologous chromosome are paired.

Revolt · Accepted Answer

prophase I

Question 3

Nuclear envelopes form around separated chromosomes.

Revolt · Accepted Answer

telophase I

Question 4

Homologous chromosomes line up on the equator.

Revolt · Accepted Answer

metaphase I

Question 5

Question 5

Revolt · Accepted Answer

Chromosomes are lined up by spindle fibers.: metaphase II; Nuclear envelope forms around each set of DNA.: telophase II; Sister chromatids are pulled apart.: anaphase II

Question 6

Chromosomes are lined up by spindle fibers. Nuclear envelope forms around each set of DNA. Sister chromatids are pulled apart. Centromeres move toward the poles of the cell.

Revolt · Accepted Answer

✔ metaphase II; Selection 1: metaphase II; Selection 2: telophase II; Selection 3: anaphase II; Selection 4: prophase II

Question 7

Explain the relationship between crossing over and genetic variation.

Revolt · Accepted Answer

Crossing over is the process during meiosis where homologous chromosomes pair up and exchange sections of genetic material between nonsister chromatids. This results in genetic recombination, which creates new combinations of genes on a single chromosome. This process is a key source of genetic variation, ensuring that offspring have unique genetic profiles and are not identical to their parents or siblings.

Question 8

What information did you include in your response?

Revolt · Accepted Answer

Crossing over is the process by which genetic material is exchanged by non-sister chromatids during meiosis.; Crossing over results in a new combination of genetic information for the cell for a specific trait.; Crossing over ensures that organisms are not identical from generation to generation.; Genetic recombination allows for a variation in genetic material that is passed through the generations.

Question 9

Explain how independent assortment occurs in cells and explain its importance.

Revolt · Accepted Answer

Independent assortment is Mendel’s second law of inheritance, which states that traits are passed from parents to offspring independently of each other. This process occurs during Metaphase I of meiosis when homologous chromosome pairs align randomly at the metaphase plate. Because there are two possible alignments for each pair of chromosomes and these alignments are determined by chance, the process leads to significant genetic variation in the resulting gametes.

Question 10

What information did you include in your response?

Revolt · Accepted Answer

Independent Assortment is the second law of inheritance; Traits are passed from parents to offspring independently of one another.; Independent assortment is random and occurs during Metaphase I of meiosis.; There are two possible alignments for the chromosomes.; Since the alignments are random and not assigned, genetic variation occurs.

Meiosis Answers

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