Alleles, Genotypes and Phenotypes

The different combinations, or pairing, of alleles - the GENETIC makeup of an organism

• genotype

• phenotype

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

How a trait PHYSICALLY appears in an organism

• heterozygous

• homozygous

• phenotype

• genotype

This allele needs two copies in order to be expressed

• Dominant

• Recessive

This allele is always expressed when at least one present

• Dominant

• Recessive

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Recessive alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

If two identical alleles are inherited, then an organism is ___ for that trait.

• genotype

• phenotype

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-2

If two different alleles are inherited by an organism, then an organism is ___ for that trait.

• homozygous

• heterozygous

• genotype

• phenotype

Tags

NGSS.HS-LS3-1

An organism that has one dominant allele and one recessive allele.

• Heterozygous

• Homozygous

• Gene

• Trait

An organism that has both aleles in the same form: dominant or recessive

• Homozygous

• Heterozygous

• Heredity

• Allele