Amoeba Sisters Alleles and Genes

Front

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

Back

23 pairs, 46 chromosomes.

Front

Dominant Traits show up: Always or Only when there are two?

Back

Always.

Front

Recessive Traits show up: Always or Only when there are two?

Back

Only when there are two.

Front

B=Blonde Hair b=Brown Hair. If a person was BB they would have: Blonde Hair or Brown Hair?

Back

Blonde Hair.

Front

B=Blonde Hair b=Brown Hair. If a person was Bb they would have: Blonde Hair or Brown Hair?

Back

Blonde Hair.

Front

What is an allele?

Back

An allele is a variant form of a gene.

Front

What does homozygous mean?

Back

Homozygous means having two identical alleles for a particular gene.

Front

What does heterozygous mean?

Back

Heterozygous means having two different alleles for a particular gene.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism.

Front

What is a phenotype?

Back

A phenotype is the physical expression of a genotype.