Genetic Terminology and Concepts

Having 2 different alleles for a trait.

• homozygous

• heterozygous

• phenotype

• Punnett square

2 or more versions of a gene. Represented by letters.

• Punnett square

• phenotype

• homozygous

• allele

Factors that determine your traits.

• genes

• Punnett square

• phenotype

A _________ ______ is hidden when t he dominant allele is present.

• recessive allele

• dominant allele

• Punnett square

• homozygous

The physical trait or outward appearance.

• genotype

• phenotype

• Punnett square

• allele

One whose trait always shows up when the allele is present.

• Punnett square

• phenotype

• dominant allele

• recessive allele

A chart that shows all the possible combinations of alleles that can result from a genetic cross.

• allele

• genes

• phenotype

• Punnett square

Two identical alleles for a trait is known as

• homozygous

• heterozygous

• mutation

• codominance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism’s genetic makeup; the pair of alleles for a trait is called a(n)

• dominant trait

• genotype

• phenotype

• recessive trait

1 plant is heterozygous yellow (Yy) and it is crossed with a homozygous green (yy) plant. What is the probability of one of their offspring having a yellow color?

• 0 %

• 25 %

• 50 %

• 75 %