Ch. 26 & 27: Genetics

Front

How many human blood types are there?

Back

There are 4 human blood types: A, B, AB, and O.

Front

What does the genotype 'rr' indicate about a dog's fur color?

Back

A dog with 'rr' genes would have brown hair.

Front

If two black rabbits produce 23 black and 9 white bunnies, what are their likely genotypes?

Back

The likely genotypes of the two black rabbits are Rr and Rr.

Front

What are the possible genotypes of a black rabbit and a white rabbit that produce half black and half white bunnies?

Back

The likely genotypes are Rr and rr.

Front

What does the genotype 'AA' represent in terms of dominance?

Back

The genotype 'AA' represents an organism that is pure dominant.

Front

Define genotype.

Back

Genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

Define phenotype.

Back

Phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the difference between homozygous and heterozygous?

Back

Homozygous means having two identical alleles for a trait, while heterozygous means having two different alleles.

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even when only one copy is present.

Front

What is a recessive allele?

Back

A recessive allele is an allele that only expresses its trait when two copies are present.