Biology- Chapter 8

In a cell containing 10 chromosomes, meiosis results in the formation of daughter cells containing _____ chromosomes.

5

A human bone marrow cell in the prophase stage of mitosis contains 46 chromosomes. Therefore, there are a total of __________ sister chromatids in this cell.

92

Imagine that a human skin cell went through mitosis but did not undergo cytokinesis. How many chromosomes would be in the cell?

92

Which of the following statements is false?

An X chromosome is an autosome.

The stage of mitosis during which the chromosomes move toward separate poles of the cell is _____.

anaphase

Eukaryotic chromosomes differ from prokaryotic chromosomes in that they

are housed in a membrane-enclosed nucleus.

The process by which the cytoplasm of a eukaryotic cell divides to produce two cells is called:

cytokinesis

A benign tumor differs from a malignant tumor in that a benign tumor:

does not metastasize.

During meiosis, homologous chromosomes sometimes "stick together" and do not separate properly. This phenomenon is known as _____.

nondisjunction

Crossing over occurs during _____.

prophase I

An example of a cell that is 2n is a __________.

somatic cell

The genetic material is duplicated during

the s phase

You and your lab partner are observing a cell under a microscope, but you do not know whether it is a eukaryote or a prokaryote. Which of the following observations regarding the chromosomes would you use to immediately conclude that the cell is a eukaryote?

The chromosomes are housed in a membrane-enclosed nucleus.

Within one chromosome, what is the relationship between the sequence of bases in DNA of one sister chromatid compared to the other?

The sequences are identical.

Which of the following is a feature of plant cell division that distinguishes it from animal cell division?

formation of a cell plate.

The function of meiosis is to make __________.

four cells with a haploid number of chromosomes.

In anaphase I of meiosis, __________.

homologous chromosomes move toward opposite poles.

When we say that an organism is haploid, we mean that _____.

its cells each have one set of chromosomes.

Sister chromatids are:

made only of DNA

After fertilization, the resulting zygote begins to divide by __________.

mitosis