Sex And Meiosis

Question 1

Meiosis results in daughter cells that

Answer 1

Have Half the number of chromosomes of the parent cell

Question 2

Crossing over occurs in what phase of meiosis?

Answer 2

Prophase

Question 3

Which statement about homologous is false:
- Homologous chromosomes must have the same alleles
- Homologous chromosomes are found in diploid cells
- homologous chromosomes must have the same genes
- homologous chromosomes are composed of a maternal and paternal chromosome

Answer 3

Homologous chromosomes must have the same alleles

Question 4

During synapsis, homologous chromosomes switch genes. The site of crossing over is called

Answer 4

Chiasma

Question 5

Which of the following cells undergo meiosis

Somatic cells
Liver cells
Unicellular organisms

Answer 5

Non

Question 6

Crossing over occurs during

Answer 6

Prophase 1

Question 7

The cells which are produced at the end of meiosis 2 are diploid?

Answer 7

False

Question 8

Which of the following is the correct product at the end of meiosis 2?

Answer 8

4 haploid cells

Question 9

Which of the followin describes an event that results from mitosis but NOT during meiosis?

• daughter cells are not identical to parent cells
• DNA condenses into chromosomes
• Daughter cells are identical to parent cells
  Daughter cells contain Alf as much DNA as parent cells

Answer 9

Daughter cells are identical to parent cells

Question 10

Genetic diversity is enhanced by all of the following except ____

• independent assortment of chromosomes in metaphase 1
• crossing over during prophase 1 in meiosis
• process of mitosis of somatic cells
• random fertilization

Answer 10

process of mitosis of somatic cells

Question 11

What happens during metaphase 1 and 2?

Answer 11

During metaphase 1 homologous chromosomes line up to be pulled apart and during metaphase 2 chromosomes line up on the metaphase plate for sister chromatids to be pulled apart

Question 12

Explain how the orientation of homologous chromosomes during metaphase 1 of meiosis contributes to greater variation in gametes

Answer 12

The random alignment of homologous chromosomes at the metaphase plate ensures the random destination of the chromosomes in the daughter cells

Question 13

Meiosis i a type of cell division

Answer 13

Gametes

Question 14

The process of meiosis begins with

Answer 14

Diploid cells and ends with haploid cells

Question 15

What causes genetic differences in cells produced through meiosis

Answer 15

Genetic variation is increased by meiosis bc of recombination and independent assortment in meiosis

Question 16

Synapsis, synaptonemal complex, Chiasmata, bivalent, tetrad

Answer 16

Synapsis: The pairing and physical alignment of homologous chromosomes during prophase 1 of meiosis
Chiasma: points where crossing over and genetic exchange occur between homologous chromosomes during meiosis
Bivalente: pair of homologous chromosomes physically bound together during meiosis 1 also known as a dyad
Tetrad; A group of 4 chromatids ( 2 from each homologous chromosome) formed during the prophase 1 of meiosis after DNA replication