Genetics Short Review

Genetics Short

Review

PRACTICE Review The principle of dominance state thata. all alleles are dominant.b. all alleles are recessive.c. some alleles are dominant and others

are recessive. d. alleles are neither dominant or

recessive.

PRACTICE Review The principle of dominance state thata. all alleles are dominant.b. all alleles are recessive.c. some alleles are dominant and

others are recessive.

d. alleles are neither dominant or recessive.

PRACTICE ReviewOrganisms that have two different alleles for a particular trait are said to bea. Hybridb. Dominantc. Homozygousd. Heterozygous

PRACTICE ReviewOrganisms that have two different alleles for a particular trait are said to bea. Hybridb. Dominantc. Homozygousd. Heterozygous

PRACTICE Review The ____________________ is the set of alleles an organism has

for a particular trait.

Usually written, for example: RR, Rr, bb

PRACTICE Review

GENOTYPE

PRACTICE ReviewWhat the resulting trait actually

looks like is called the ________________ or physical

trait.

Usually written, for example: Red, Round, Tall

PRACTICE Review

PHENOTYPE

PRACTICE Review When Gregor Mendel crossed a true-breeding tall plant with a true-breeding short plant in the P generation, the F1 plants inherited

a. An allele for shortness from each parent.b. An allele for tallness from each parent.c. An allele from only the tall parent.d. An allele for tallness from the tall parent and an allele for shortness from the short parent.

PRACTICE Review When Gregor Mendel crossed a true-breeding tall plant with a true-breeding short plant in the P generation, the F1 plants inherited

a. An allele for shortness from each parent.b. An allele for tallness from each parent.c. An allele from only the tall parent.d. An allele for tallness from the tall parent and an allele for shortness from the short parent.

Method!! After studying specific traits

(characteristics that vary by plant)

True-Breeding: If self-pollinated, then only produce offspring identical to self.

Hybrids: The offspring crosses between parents with different traits.