Unit 2: Heredity & Evolution: S7L3

Front

What is the twisted ladder shape of DNA formed by two nucleotide strands twisted around each other?

Back

Double Helix

Front

What is the diagram used to identify possible combinations of dominant and recessive alleles in offspring based on the genotypes of the parents?

Back

Punnett Square

Front

What term describes an organism's allele pairs?

Back

Genotype

Front

What is the alternative form that a single gene may have for a particular trait?

Back

Alleles

Front

What term refers to the mathematical changes of an event?

Back

Probability

Front

What is the term for an organism that has two identical alleles for a trait?

Back

Homozygous

Front

What is the observable physical or biochemical characteristics of an organism?

Back

Phenotype

Front

What is the term for the genetic makeup of an organism?

Back

Genotype

Front

What is the term for a trait that is expressed only when two recessive alleles are present?

Back

Recessive Trait

Front

What is the term for a trait that is expressed when at least one dominant allele is present?

Back

Dominant Trait