Genetics Test--NEW

A characteristic that an organism can pass to its offspring is

• phenotype

• trait

• genotype

The ____________ is the form of the gene that is hidden when the dominant is present.

• allele

• dominant allele

• recessive allele

• genotype

If the recessive is expressed in the phenotype, what can you determine about its genotype?

• Both of the alleles in the genotype are recessive.

• At least one allele in the genotype is recessive.

• Both alleles in the genotype are dominant.

Genetics is the

• study of pea plants

• study of heredity.

• phenotype of an organism

• a characteristic that can be passed on.

An organisms genotype describes

• its physical characteristics

• the way it looks

• the alleles of the gene it contains.

A ________________ is a unit that determines traits.

• chromosome

• gene

• allele

Mendel studied ____________ traits in pea plants.

• flower color

• pod color

• seed shape and color

• all of the above

If a pea plant contains a recessive allele for wrinkled seeds and a dominant for smooth seeds, the phenotype will be:

• smooth seeds

• wrinkled seeds

• half smooth and half wrinkled

In order to show all the possible combinations of alleles from parents, we use:

• punnett squares

• phenotypes

• genotypes

• none of the above

____________ is the mathematical chance that an event will occur.

• punnett square

• probability

• crossing over