Meiosis

A normal human skin cell would have ___ chromosomes.

• 44

• 22
• 23

• 46

Meiosis makes sperm and egg cells. In humans, sperm and egg cells are _____, with 23 chromosomes. A zygote is_____ with 46 chromosomes.

• diploid; diploid

• haploid; diploid

• haploid; haploid

• diploid; haploid

Tags

NGSS.HS-LS3-2

Unlike mitosis, meiosis results in the formation of

• one haploid gamete
• three diploid gametes
• four diploid gametes
• four haploid gametes

Tags

NGSS.HS-LS3-2

If a somatic cell in a butterfly contains 24 chromosomes, a butterfly egg would contain

• 3
• 6
• 12
• 24

Tags

NGSS.HS-LS3-2

Chromosomes exchange genetic material during 

• crossing over
• replication
• synthesis
• translation

Tags

NGSS.HS-LS3-2

A person with Turner syndrome has only one X chromosome. This means one of their gametes was missing a chromosome. Which of the following is why gametes sometimes lack a complete chromosome?

• Incomplete dominance
• Nondisjunction
• Inversion mutation
• Substitution mutation

Tags

NGSS.HS-LS3-2

Which structure is labeled as C in the diagram?

• Centromere
• Chromosome
• Sister chromatids

Tags

NGSS.HS-LS1-4

All of the following are true of nondisjunction, EXCEPT:

• It can result in trisomy or monosomy

• It can occur in Meiosis I or Meiosis II

• It only occurs when sister chromatids fail to separate

• It can result in gametes with an abnormal number of chromosomes

A pair of identical chromosomes shown in a karyotype, one inherited from mom, and one inherited from dad are called

• sister chromotids
• centromeres
• homologous chromosomes
• autosomes

Tags

NGSS.HS-LS3-1

What makes this individual's karyotype not normal?

• An extra sex chromosome
• An extra autosome
• A missing sex chromosome
• A missing autosome

Tags

NGSS.HS-LS3-2