Meiosis Biology II

Disorders involving unusual numbers of sex chromosomes show that "maleness" is caused by

• presence of X chromosome

• presence of Y chromosome

• absence of X chromsome

• absence of Y chromosome

Two chromosomes in the nucleus that carry loci for the same traits in the same position on chromosomes but specify different versions of some traits constitute a pair of

• homologous chromosomes

• heterologous chromosomes

• complimentary chromosmes

• polyploid chromosomes

If a chromosome fragment breaks off and then reattaches to the original chromosome in reverse direction the resulting abnormality is called a(n)

• deletion

• inversion

• translocation

• nondisjunction

Crossing over is

• important in genetic recombination

• what makes a cell become cancerous

• a key process that occurs during mitosis

• an important mechanism in chromosome repair

Tags

NGSS.HS-LS3-2

If there are 22 chromosomes in the nucleus of a toad skin cell, a toad egg would contain ____ chromosomes.

• 22

• 44

• 11

• 33

Tags

NGSS.HS-LS3-2

Which of the following carry the same genetic information?

• sister chromatids

• X and Y chromosomes

• all autosomes

• all haploid cells

Human ___ are diploid, and human ___ are haploid.

• sex chromosomes...autosomes

• autosomes...sex chromosomes

• somatic cells...gametes

• gametes...somatic cells

Which of the following is a difference between mitosis and meiosis?

• in mitosis 4 daughter cells are produced, whereas in meiosis two daughter cells are produced

• in mitosis 2 daughter cells are produced, whereas in meiosis 4 daughter cells are produced

• cells produced by mitosis are diploid, cells produced by meiosis are haploid

In humans, the 22 pairs of chromosomes that don't include the sex chromosomes are called

• loci

• polysomes

• autosomes

• somatic chromosomes

During which stage of meiosis does the tetrad occur?

• interphase I

• prophase I

• prophase II

• none of the above