Genetics Chap. 11 Test Flashcards
(21 cards)
The study of heredity
Genetics
An alternate form of a gene
Allele
Appearance of organism is effected in this trait
Dominant
No effect on organisms appearance in this trait
Recessive
When parents produce offspring of the same variety
True breeding
All gametes have the same allele
Homozygous
Two different alleles for a gene
Heterozygous
Physical expression of an organism
Phenotype
Genetic makeup of an organism
Genotype
Organize genetic info to predict the possible genotypes and phenotypes of an organism
Punnett square
Two different alleles for a gene
Hybrid
Parental generation
P generation
First filial generation
F1 generation
Second filial generation
F2 generation
When neither allele is completely expressed
Incomplete dominance
When phenotypes of an allele are clearly expressed
Codominance
When one gene can have many possible alleles
Multiple alleles
Traits controlled by two or more genes
Polygenic traits
A Punnett square that determines the outcome between two traits
Monohybrid cross
A Punnett square that determines the outcome between four different traits
Dihybrid cross
A characteristic passed from parents to offspring
Trait
