Exam 2 Lab8

Question 1

2 mechanisms in meiosis that yeild genetic variability

Answer 1

Independent assortment

Crossing over

Question 2

Differences between Mitosis and Meiosis

Answer 2

Mitosis has 1 nuclear division, Meiosis has 2
Mitosis produces 2 diploid daughter cells, Meiosis produces 4 haploid
Mitosis daughter cells are genetically identical, Meiosis daughter cells have genetic variation

Question 3

Similarities between Meiosis and Mitosis

Answer 3

Both result in cell division
Both duplicate chromosomes
Both use spindle fibers to move chromosomes

Question 4

What is independent assortment

Answer 4

Random alignment of homologues in metaphase

Question 5

What is crossing over

Answer 5

process by which 2 chromosomes of a homologous pair exchange equal segments of genetic information

Question 6

Define Genotype

Answer 6

Alleles individual receives at fertilization

Question 7

Define Phenotype

Answer 7

Physical appearance of individual

Question 8

Monohybrid

Answer 8

2 Heterozygous individuals (AaXAx)

Question 9

Dihybrid

Answer 9

2 dihybrid (Heterozygous for 2 traits) individuals(AaBb X AaBb)

Question 10

Ratio for monohybrid

Answer 10

3:1

Question 11

Ratio for Dihybrid

Answer 11

9:3:3:1