BJU Press Biology 8A Review Questions

How many homologous pairs of chromosomes do you have?

22 pairs

What's the difference between asexual and sexual reproduction?

Asexual reproduction is a result of mitosis and leads to genetically identical offsprings. Sexual reproduction is a result of meiosis and leads to genetically different offsprings.

Give two differences between anaphase I and anaphase II in meiosis.

In anaphase I, tetrads are separated and centromeres stay intact. In anaphase II, centromeres split and chromosomes are separated into chromatids.

During which phase of mitosis do the centromeres split?

Anaphase

Which type of cell division turns a diploid cell into a haploid cell?

Meiosis

I'm which phase of meiosis is genetic information exchanged between chromosomes?

Prophase

A single muscle cell can contain dozens of nuclei. Which stage of the cell cycle is the cell not completing? How do you know?

The cell is not completing cytokinesis. Nuclei are being formed during mitosis, but they're not separated into new cells during cytokinesis.

During which phase of mitosis does the mitotic spindle assemble? In which phase does it disassemble?

The mitotic spindle assembles during prophase and disassembles during telophase

Why is meiosis split into meiosis I and II?

There are two cell divisions during meiosis: the first occurring during meiosis I and the second occurs in meiosis II

In which stage of the cell cycle is the cell preparing itself to divide?

Interphase