PBS 2.2.5 Quiz Review (Quizizz)

Which of the following occurs in meiosis but not in mitosis?

• separation of chromatids (daughter chromosomes)

• lining up of chromosomes in the middle

• dissolving of the nucleus

• tetrad (homologous pair) separation

• cytokinesis (pinching and splitting of the cytoplasm)

A zygote (fertilized egg) contains

• a diploid number of chromosomes, 23.

• a diploid number of chromosomes, 46.

• a haploid number of chromosomes, 46.

• a haploid number of chromosomes, 23.

• a diploid number of chromosomes, 2.

Tags

NGSS.HS-LS3-1

After mitosis, cells are

• haploid and there are 4 new cells.

• diploid and there are 4 new cells.

• haploid and there is 1 new cell.

• haploid and there are 2 new cells.

• diploid and there are 2 new cells.

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The purpose of meiosis is to

• produce new cells.

• repair damaged cells.

• produce sex cells (gametes).

• replace old cells.

• make cells grow faster.

In meiosis, cells become haploid

• after the first division.

• ...cells are never haploid after meiosis.

• before division begins.

• after the second division.

• after the third division.

Down syndrome

• is a genetic disorder.

• is caused by inheriting an extra chromosome 11.

• is caused by a defect in the sex chromosomes.

• is caused by inheriting an extra chromosome 21.

• is a chromosomal disorder.

An extra X chromosome to a set of XY chromosomes is called

• Patau's syndrome.

• Down syndrome.

• Turner syndrome.

• Edwards syndrome.

• Klinefelter syndrome.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Chromosomal disorders are caused by

• inheriting a recessive allele.

• a mutation in a gene.

• having an extra chromosome than normal.

• having one less chromosome than normal.

• a bacterial infection.

What is the TOTAL number of chromosomes that is contained in the cell of a healthy, genetically normal human being?

• 92

• 46

• 43

• 22

Autosomes are

• pairs of homologous chromosomes.

• sex chromosomes that determine biological gender.

• diagrams of chromosomes arranged in a pattern.

• the first 22 chromosomes on a karyotype.