11.1 Study Guide

Question 1

Definitions:
Genotype
Homozygous
Heterozygous
Phenotype
Genotypic ratio
Phenotypic ratio
Dominant vs recessive
Codominance

Answer 1

Genotype: An individuals allele combination
Homozygous: Both sane alleles,
Heterozygous: Two different alleles
Phenotype: The visible traits that alleles cause
Genotypic ratio: The ratio between the genes
Phenotypic: The ratio between the phenotypes
Dominant: One capital letter to cause a phenotype no matter what the other allele is.
Recessive: The little letters
Codominance: Both alleles are expressed equally.

Question 2

How did Mendel set up his genetic experiments

Answer 2

He first set up pure breeding pea plants

Question 3

What were the generations, what did he always start with, what ratios did he consistently see in the F1 and F2

Answer 3

The generations were F1 and F2, he always started with parent plants true bleeding purple and white, he saw heterozygous ratios.

Question 4

Explain how a test cross works

Answer 4

Used to determine if an organism is heterozygous and or homozygous it involves crossing an organism with an unknown phenotype.

Question 5

Predict genotypic and phenotypic ratios for a trait with a dominant and recessive pattern

Answer 5

It would have 1 homozygous dominant 2 heterozygous and one homozygous recessive
The phenotype would be 3/4 dominant and 1/4 recessive

Question 6

Predict genotypic and phenotypic ratios for a trait that is codominant

Answer 6

1/4 TT, 2/4 Tt, 1/4 Tt