Unit 2 Exam: Chromosomes, Karyotypes & Meiosis

How many chromosomes can be found in a normal human skin cell?

• 23

• 47

• 46

• 21

You are analyzing a karyotype and notice that the individual has one X and one Y chromosome. What information do you now know?

• The individual has Downs Syndrome

• The individual is female

• The individual is male

• The individual is missing an X chromosome

On a karyotype, chromosome labelled number 4 would be larger than chromosome labelled number 2.

• True

• False

Chromosomes that are similar (code for the same characteristics) but not identical are known as ____________________.

• homologous chromosomes

• sister chromatids

• autosomes

• sex chromosomes

Unlike mitosis, meiosis in male mammals results in the formation of ___________________________.

• four haploid cells

• two diploid cells

• one diploid cell

• three haploid cells

Tags

NGSS.HS-LS3-2

Meiosis is a type of cell division that results in ________________________.

• gametes (sex cells)

• somatic cells

• identical daughter cells

• bacterial cells

The illustration below represents what stage of meiosis?

• metaphase I

• prophase I

• anaphase I

• telophase I

Tags

NGSS.HS-LS3-2

A cell with the diploid number of 24 undergoes meiosis, how many chromosomes are in each daughter cell after meiosis II?

• 12

• 24

• 6

• 18

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NGSS.HS-LS3-2

Structure B is pointing to the _____. 

• chromosome
• centromere
• DNA
• chromatid

What process is shown here?

• Genetic Randomization
• Cross Over
• Allele Switching
• Cross Pollination

Tags

NGSS.HS-LS3-2