AP Biology - Meiosis

Chiasmata are most closely related to which of the following?

• crossing over
• fertilization
• cytokinesis
• mitosis

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If a stem cell has 24 chromosomes, how many will it have at the end of meiosis?

• 24
• 12
• 6
• the number varies per species

When does crossing over occur?

• Interphase
• Prophase 1
• Prophase 2
• Metaphase 1

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NGSS.HS-LS3-2

Trisomy is a genetic disorder that ________

• has three sets of chromosomes
• has three copies of a particular chromosome
• that is curable
• none of the above

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NGSS.HS-LS3-1

Meiosis results in ______.

• 4 genetically distinct haploid gametes
• 2 genetically distinct cells
• 2 genetically identical cells
• 4 genetically identical cells

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NGSS.HS-LS3-2

What are alleles

• different forms of the same gene
• an alternate step of the cell cycle
• body cells
• another name for gametes

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NGSS.HS-LS3-1

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

• homozygous 
• asexual
• homologous
• genes

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NGSS.HS-LS3-2

The purpose of meiosis is to form ________ cells.

• body
• sex
• somatic
• brain

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NGSS.HS-LS3-2

When homologous chromosomes match up, they form a structure call a ___________.

• tetrad
• triad
• diploid
• gamete

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NGSS.HS-LS3-2

Crossing over helps promote 

• male genotype
• genetic variation
• DNA replication
• mitosis

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NGSS.HS-LS4-2

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