Genetics Basic Terms

the expressed gene in a hybrid (will always be visible if present); represented by a capital letter

• Controlling

• Dominant 

• Recessive 

• Agressive

allele that is masked by the presence of a dominant allele (will not always be visible if present); represented by a lowercase letter

• Dominant

• Recessive

• Virus

• Genetic

an allele combination (on the homologus chromosomes) for a trait (ex: RR, Rr, or rr)

• Recessive

• Dominant

• Phenotype

• Genotype

the PHysical characteristic resulting from a genotype

• Phenotype

• Genotype

• Dominant

• Recessive

two forms of a gene (dominant and recessive)

• Dominant 

• Alleles

• Traits

• Recessive

Process that is responsible for genetic variation

• Mitosis 

• Meiosis

• Protein synthesis 

• DNA replication

Each box of the Punnett square represents what percent?

• 10

• 15

• 25

• 20

Which of the following is homozygous recessive?

• Rr

• RR

• rr

• All of them

What is an allele?

• A gene

• A genotype

• A phenotype

• Different forms of a gene

Which of the following genotypes is heterozygous?

• Bb

• BB

• bb

• B