Lecture 3

Question 1

Zygote?

Answer 1

The first diploid cell after the fusion of gametes.

Question 2

Synapsis?

Answer 2

The fusion of homologous chromosomes at the start of meiosis.

Question 3

Autosomes?

Answer 3

Chromosomes other than sex chromosomes.

Question 4

Linkage?

Question 5

Recombinant?

Question 6

The number of types of gametes is expressed as? (3•)

Answer 6

•2^n where •n is the number of heterozygous genes and •2 is???

Question 7

Do alleles have physical association if genes are on different chromosomes?

Answer 7

No

Question 8

If two genes are considered, the probability of a specific genome is?

Answer 8

The sums of the probability of allele sequences.

Question 9

Codominance?

Answer 9

Heterozygous individuals have a phenotype that is a combination of both alleles.

Question 10

If you have a reciprocal cross of alleles between different sex and if you have different results in F1, then?

Answer 10

The alleles are x-linked.

Question 11

If you get a large number of genotypes but a small number of the others, then?

Answer 11

The genes are linked and doesn’t assort independently and crossing over doesn’t occur as frequently.

Question 12

Independent assortment?

Question 13

Recombination?

Answer 13

When genetic data from one DNA segment gets swapped from another segment.

Question 14

When explaining a dominance relationship, what pieces of information must you conclude?

Answer 14

•Claim that an allele is dominant over another
•Evidence that a dominance/recessive relationship exists
•Evidence that an allele