2024 Genotype vs Phenotype

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses (e.g., AA, Aa, aa).

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Front

What is a phenotype?

Back

A phenotype is the physical appearance or observable traits of an organism, resulting from the interaction of its genotype with the environment.

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., AA or aa).

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene (e.g., Aa).

Front

What is the dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present (e.g., E in Ee).

Tags

NGSS.HS-LS1-1

Front

What is the recessive allele?

Back

A recessive allele is an allele that expresses its trait only when two copies are present (e.g., e in ee).

Front

If a person has a cleft chin, what could their genotype be?

Back

Their genotype could be either EE (homozygous dominant) or Ee (heterozygous).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

If a person has a smooth chin, what must their genotype be?

Back

Their genotype must be ee (homozygous recessive).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the genotype for curly hair?

Back

The genotype for curly hair can be either HH (homozygous dominant) or Hh (heterozygous).

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the genotype for straight hair?

Back

The genotype for straight hair must be hh (homozygous recessive).

Tags

NGSS.HS-LS3-2