Mitosis & Meiosis Warm Up

Which of the following is the best definition for MEIOSIS?

• the process of two haploid cells uniting

• the counting of chromosomes within a diploid cell

• a two-step process that reduces the number of chromosomes in half such that there is only one copy of all the chromosomes

• the equational division of a cell into two identical copies

Tags

NGSS.HS-LS3-2

How many chromosomes (in humans) do the daughter cells have in meiosis?

• 23

• 46

• 2

• 4

A pair of homologous chromosomes (a tetrad) is composed of ​ ​ (a)   matching chromosomes, and ​ (b)   sister chromatids.

• two
• four
• one
• three

Crossing over occurs during prophase I of meiosis. Which statement about crossing over is true?

• RNA translation occurs in the smooth endoplasmic reticulum

• Crossing over takes place in backterial cells

• Crossing over produces genetically identical daughter cells

• Crossing over provides genetic diversity in eukaryotic cells

Tags

NGSS.HS-LS3-2

During prophase I crossing over occurs and genetic material is exchanged between homologous chromosomes. How is this important

• Increases genetic variation

• Reduces the diploid number to the haploid number

• Increases the haploid number to the diploid number

• Reduces the probability of mutations

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which part of MEIOSIS is identical to MITOSIS? (hint: # of chromosomes are not reduced)

• Meiosis I

• Meiosis II

• A

• B

• C

• D

Tags

NGSS.MS-LS3-2

Organize these options into the right categories

Groups:

(a) Meiosis

,

(b) Mitosis

• Haploid Cells

• gametic cells

• divides 2x

• divides 1 x

• somatic cells

• diploid cells

• identical cells

• Varied Cells

Tags

NGSS.HS-LS1-4

Match the following diagrams with the correct phases of MEIOSIS 1

• Telophase

• 
• Prophase

• 
• Metaphase

• 
• Anaphase

• 

Tags

NGSS.HS-LS3-2

Cells and the organisms they make up reproduce through cell division. Some organisms reproduce through mitosis, while others reproduce through meiosis and fertilization. What advantage does meiosis give to organisms that reproduce sexually?

• Meiosis ensures that offspring inherit genes from their parents.

• Meiosis ensures that offspring will not inherit any genetic disorders.

• Meiosis ensures that offspring are genetically different from their parents.

• Meiosis ensures that offspring will have identical phenotypes to their parents.

Tags

NGSS.HS-LS3-2