Lab Quiz #8

Define:
Genetics
Character
Trait
Gene
Loci
Allele

-study of character inheritance
-inherited trait
-character variant
-codes for specific character traits
-position on a homolog
-gene form / occupies a loci

What are the allele types?

Dominant and Recessive

What does allele interaction dictate?

character trait

Define:
Homozygous gene:
Homozygous Dominant:
Homozygous Recessive:
Heterzygous gene:

-alleles are identical
-both alleles dominant
-both alleles recessive
alleles differ

Define:
Genotype:
Phenotype:

-different allele combinations
-different observed expressions

What are the different dominance levels between alleles?
Describe them.

-Complete Dominance: dominant allele completely covers recessive allele
-Incomplete dominance: Dominant allele does not completely mask recessive allele.
-Co-Dominance: alleles equally dominate and are both fully expressed.

Two flowers are crossed
Dominant Red RR plant & Recessive white rr plant.
What will the phenotype and genotype be considering dominance levels?

Complete : Rr red
Incomplete Rr pink

What is a monohybrid cross?
What is a di-hybrid cross?

1 character cross
2 character cross

What is a Punnett Square used for?

predicting genotypic and phenotypic offspring ratios.

What is:
P1:
F1:
F2:

-parent generation
-first generation offspring
-second generation offspring

What is the gamete number formula for crosses?

2 ^N
N = number of characters