Meiosis Review

How many chromosomes are in a human somatic cell?

• 46

• 23

• 22

• 45

How many chromosomes are in a human gametic cell?

• 23

• 46

• 45

• 22

Tags

NGSS.HS-LS3-2

What is the outcome of crossing over?

• increased genetic variation

• decreased genetic variation

• increased number of gametes

• splitting of homologous chromosomes

When does crossing over occur?

• prophase I of meiosis I

• prophase II of meiosis II

• metaphase I of meiosis I

• s phase

What kind of cells do meiosis?

• reproductive cells

• all tissues

• all tissues except brain and spinal cord

• somatic cells

Tags

NGSS.HS-LS3-2

Which of the following statements about fertilization is correct?

• sperm fertilizes egg

• egg fertilizes sperm

• egg fertilizes egg

• sperm fertilizes sperm

How does the number of chromosomes in a zygote compare to the gametes?

• it is doubled

• it is halved

• it is equal

• it depends

Tags

NGSS.HS-LS3-2

Law of segregation

• each of an organism's two alleles will be separated during meiosis into different gametes

• homologous chromosomes are pulled randomly to either side and do not affect which way a different pair is pulled apart

• crossing over occurs and increases genetic variation

• two, identical, daughter cells are produced

Tags

NGSS.HS-LS3-2

Law of independent assortment

• each of an organism's two alleles will be separated during meiosis into different gametes

• homologous chromosomes are pulled randomly to either side and do not affect which way a different pair is pulled apart

• crossing over occurs and increases genetic variation

• two, identical, daughter cells are produced

What is one purpose of meiosis?

• to create cells with half the total genes of the parent cell

• to create identical cells from the parent cell

• to keep the genome with the same number of genes as the parent cell

• to produce haploid cells for asexual reproduction

Tags

NGSS.HS-LS3-2