Genetics Vocabulary Flashcard

Front

What is the term for an allele that is represented by a capital letter and controls the trait that always shows up in an organism?

Back

dominant allele

Front

What do we call an organism's gene combination or code, such as Tt?

Back

genotype

Front

What are different forms of a gene that control the inheritance of traits called?

Back

alleles

Front

What is the term that has the same meaning as heterozygous?

Back

hybrid

Front

What do we call two identical alleles, such as TT or tt?

Back

purebred or homozygous

Front

What is the term for an allele that is represented by a lowercase letter and is masked by a dominant allele?

Back

recessive allele

Front

What is the genetic makeup of an organism that includes both dominant and recessive alleles?

Back

heterozygous

Front

What is the physical expression of a genotype called?

Back

phenotype

Front

What is the term for the observable characteristics of an organism?

Back

phenotype

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous has identical alleles (TT or tt), while heterozygous has different alleles (Tt).