Biology Unit 7: Meiosis and Genetics

The chromosomes that pair up during meiosis, are called __________ chromosomes.  

• homozygous 
• asexual
• homologous
• genes

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?

• 20
• 40
• 80
• 160

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Which letter(s) in the diagram correspond to cells that are haploid? 

• A
• B
• C
• A and B

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What causes genetic variation in meiosis?

• chromosomes lining up
• crossing over of chromosomes
• separation of chromosomes
• chromosomes pulling apart

Females have ____ and males have _____ chromosomes.

• XX, XY
• XY, XX
• XX, XX
• XY, XY

What is this?

• Trisomy 13
• Monosomy 21
• 47, XXY
• Trisomy 21

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NGSS.HS-LS3-2

The cells produced via meiosis are called:

• sex cells
• somatic cells
• body cells
• skin cells

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Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.

• 23, 46
• 46, 23
• 2, 4
• 50, 100

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

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

Goes through P.M.A.T two rounds 

• Mitosis
• Meiosis
• Osmosis
• Transcription

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