Chapter 13 HW Biology

Homologous chromosomes migrate to opposite poles during _____.

anaphase I

During _____ sister chromatids separate.

anaphase II

During _____ a spindle forms in a haploid cell.

prophase II

Which processes lead to most genetic variation in sexually reproducing organisms?

random fertilization crossing over independent assortment of chromosomes in meiosis

At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids.

telophase I

At the end of _____ and cytokinesis there are four haploid cells.

telophase II

Meiosis I produces _____ cells, each of which is _____.

two ... haploid

During _____ chromosomes align single file along the equator of a haploid cell.

metaphase II

Which of these gametes contains one or more recombinant chromosomes?

B and C

Two sister chromatids are joined at the centromere prior to meiosis. Which statement is correct?

Barring mutation, the two sister chromatids must be identical.

Synapsis occurs during _____.

Prophase I

What is the best evidence telling you whether this cell is diploid or haploid?

The cell is diploid because it contains two sets of chromosomes. Only diploid cells contain two sets of chromosomes, one maternal and one paternal. Read about diploid cells.

Look at the cell in the figure. Based on this figure, which of the following statements is true?

This cell is diploid.

A human cell containing 22 autosomes and a Y chromosome is

a sperm.

Meiosis II typically produces _____ cells, each of which is _____.

four ... haploid