Genetics Test - Atlas All Stars

the sequence of DNA that codes for a protein and thus determines a trait.

• Genes

• Traits

• Phenotypes

• Genotypes

specific characteristic that varies from one individual to another. Example, brown hair, blue eyes, tall, curly hair.

• Heredity

• Genes

• Traits

• MItochondria

This type of trait can only be expressed in the absence of a dominant trait.

• Codominant

• Do not click this one

• Dominant

• Recessive

What is a phenotype?

• The expression of a trait; what you see.
• refers to the genetic makeup of an individual
• An organism that has the same genes for a trait (ex. TT or tt)
• the passing of traits from parent to offspring

The inherited combination of alleles is known as the offspring's

• heredity
• phenotype
• genotype
• redigree

An organism's appearance is known as its

• heredity
• phenotype
• genotype
• pedigree

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

A heterozygous yellow pea plant's genotype would be:

• YY
• yy
• Yy
• Yg

A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?

• 1
• 2
• 3
• 4

If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?

• 100% Tt
• 50% Tt, 50% tt
• 75%Tt, 25%tt
• 25%TT, 50%Tt, 25%tt