Cyto-Mendelian Part 2

“Two copies of a gene segregate/ separate from each other during the process that gives rise to gametes”

Law of Segregation

A cross between two parents with different variants for a given character

Monohybrid Cross

Is the Genetic Makeup (ex. Tt, TT, tt)

Genotype

Are the observable characteristics

Phenotype

True or False?

P Generation is Homozygous, while F1 Generation is Heterozygous.

True.

True or False?

The parents of F2 Generation can carry either the Dominant or Recessive Allele, but not both.

True.

What is the Outcome for the F2 Generation?

Genotype - 1:2:1

Phenotype - 3:1

Who introduced the Punnett Square?

Reginald Punnett

What were the 2 hypotheses of Gregor Mendel, on the two-factor crosses?

Linked Assortment

Independent Assortment

What Hypothesis did Gregor Mendel reject based on the two-factor crosses?

Linked Assortment

On two-factor crosses, during what generation did Mendel see “Non-parental” traits.

F2 Generation

"Two different genes will randomly assort their alleles during the process that gives rise to gametes"

Law of Independent Assortment

A cross between two parents with different variants for two given characters.

Dihybrid/Two-factor Crosses

Fusion of gametes from different individuals of the same species.

Cross Fertilization

Fusion of gametes from same individual.

Self Fertilization

What phase in Meiosis I, does the Law of Independent Assortment refer to?

Metaphase of Meiosis I (Attachment of Dyads are Random)

What are the Methods for Three or More-Factor Crosses?

What are the 3 RULES OF DOMINANCE

Complete Dominance

Incomplete Dominance

Codominance

True or False?

Dominance is Universal

False.

Heterozygote phenotype is indistinguishable from a homozygous parent.

Ex: BB vs Bb (both will have brown eyes)

Complete Dominance

The phenotype of the heterozygote falls between two homozygotes.

Ex: RR (red), rr (white), Rr (pink)

Incomplete Dominance

Heterozygote phenotype expresses both phenotypes simultaneously.

Codominance (No Allele was silenced).