Slide 4

Question 1

When does independent assortment occur?

Answer 1

Metaphase 1

Question 2

Calculate the gametic combination in humans.

Now do one for humans

Answer 2

2^23 = 8.4 mil

8.4 mil x 8.4 mil = 71 x 10^(12)

Question 3

Compare the relative numbers of child-bearing offspring in asexual and sexual reproduction.

Answer 3

In sexual reproduction, the number of child-bearing offspring halves.

Question 4

Why did sexual reproduction evolve?

Answer 4

1. Elimination of harmful mutations
2. Higher adaptability to changing environmental conditions

Question 5

When does crossing over occur?

Answer 5

Late prophase 1

Question 6

(T/F) crossing over leads to recombination of alleles between genes of sister chromatids

Answer 6

False. Crossing over happens between homologous chromosomes, not sister chromosomes.

Question 7

Difference between parental and recombinant genotype

Answer 7

Recombinant introduces genetic variability

Question 8

In which part of the chromosome does crossing over occur

Answer 8

Locus (plural: loci)

Question 9

Who is the founder of modern theory of modern genetics?

Answer 9

Gregor Mendel

Question 10

Mendel’s law of inheritance

Answer 10

1. Law of Segregation
   - During gamete formation, alleles segregate so that each gamete receives one allele for each gene.
2. Law of Independent assortment
   -Alleles for different genes assort independently of one another during gamete formation, leading to genetic variation.