21) During S phase, chromosomes converted to what form? A) karyotypes B) : 1380772

21) During S phase, chromosomes converted to what form?
A) karyotypes
B) : 1380772.



21) During S phase, chromosomes are converted to what form?

A) karyotypes

B) sister chromatids

C) chromatin

D) centrosomes


22) Normal cell operations and growth occur during the “gap” period called:

A) G3.

B) M.

C) S.

D) G1.


23) Chromosome I from your mother and chromosome I from your father are said to be homologous. This is because the chromosomes:

A) appear the same size in a karyotype.

B) have different genes on them.

C) have the same genes on them.

D) determine the sex of the child.


24) A karyotype:

A) shows chromosomes as they appear before replication.

B) can reveal the location of a gene.

C) can show the number of chromosomes in a cell.

D) can reveal the presence of cancerous genes.

25) Why do karyotypes always show chromosomes at the point when cell division is about to occur?

A) This is the only cell cycle point in which the chromosomes are unduplicated.

B) The chromosomes are easier to see when they are elongated and uncondensed.

C) This is the time at which the chromosomes are being duplicated.

D) The chromosomes are fully condensed as cell division approaches.

26) Which cell cycle stage is not part of interphase?

A) G2

B) M

C) G1

D) S


27) A liver cell from a human male has:

A) 22 pairs of autosomes, an X chromosome, and a Y chromosome.

B) 22 pairs of autosomes and two X chromosomes.

C) 46 pairs of autosomes, an X chromosome, and a Y chromosome.

D) 23 pairs of autosomes and two X chromosomes.


28) The “gap” phases of the cell cycle are devoted to:

A) moving chromosomes to their correct positions.

B) normal cell operations, growth, and preparation for cell division.

C) DNA replication.

D) creating new nuclei.


29) What is being separated during anaphase of mitosis?

A) plasma membranes

B) sister chromatids

C) nuclear membranes

D) cytoplasm

30) Which cell structure physically moves the cell’s chromosomes?

A) the plasma membrane

B) the cell wall

C) the mitotic spindle

D) the contractile ring


21) During S phase, chromosomes converted to what form?
A) karyotypes
B) : 1380772

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