Unit 07 - Genetics

Front

How many alleles does an individual have for each trait?

Back

2

Front

What percentage of the offspring will be a carrier for this recessive disease (a)?

Back

25%

Front

Which of the following alleles is purebred recessive? (Tt, tt, TT)

Back

tt

Front

In plants, tall (T) is dominant to short (t). What is the probability of producing a short plant from a Tt x Tt cross?

Back

25%

Front

What genotype is missing from this Punnett Square? (RrYy, RRYY, rryy, RrYY)

Back

RrYy

Front

What is an allele?

Back

An allele is a variant form of a gene that determines a specific trait.

Front

Define genotype.

Back

Genotype is the genetic makeup of an individual, represented by the alleles they possess.

Front

Define phenotype.

Back

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

Front

What is a dominant allele?

Back

A dominant allele is an allele that expresses its trait even in the presence of a recessive allele.

Front

What is a recessive allele?

Back

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