Biology -Semester Exam

What is the purpose of meiosis?

• To halve the number of chromosomes in gametes.

• To repair damaged tissues in the body.
• To produce identical daughter cells for growth.
• To facilitate cell division in prokaryotes.

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NGSS.HS-LS3-2

This image shows chromosomes during Prophase 1. Which of the following correctly describes the process shown?

• segregation of sister chromatids
• condensation and segregation of alleles
• mutationin which the DNA content of the gene is altered
• crossing - over in which alleles are exchanged

Sea turtles have 56 chromosome in their somatic cells. How many chromosomes are in their gametes?

• 28

• 56

• 112

• 46

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92

Tags

NGSS.HS-LS3-1

In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)

• Anaphase I

• Metaphase I

• Prophase I

• Telophase I

95% of the cells life cycle

Stage where DNA is copied

• Interphase

• Metaphase

• Telophase

• Prophase

Tags

NGSS.HS-LS1-4

Chromosomes line up at the equator of the cell

Spindle fibers extend from the centrioles to the middle of the chromosomes

• Prophase

• Metaphase

• Anaphase

• Interphase

Tags

NGSS.HS-LS1-4

in the cell cycle, what is the next stage after TELOPHASE (most of the time)?

• Metaphase

• anaphase

• cytokinesis

• interphase

Tags

NGSS.HS-LS1-4

Put the following stages of the cell cycle in order: G2, S, G1, M. 

• S, G1, G2, M

• G1, S, G2, M

• G1, M, G2, S

• M, G1, S, G2

What is the image above:

• Chromosome

• Chromotid

• Centromere

• Centriole

Tags

NGSS.HS-LS3-1