Genetics Review

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

The passing on of traits and behaviors from parents to their offspring is

• offspring

• heredity

• DNA

• genes

Is weak, prefers to "hide"

• dominant genes

• trait

• recessive genes

• genes

Only takes 1 in a gene pair for a trait to show up

• recessive genes

• DNA

• offspring

• dominant genes

A trait is a physical feature, part of an organism's outward appearance.

• False

• True

The genotype of an organism describes the

• codons that make up the genes
• number of gene's on the chromosmes
• genetic make-up of a trait
• type of chromosomes in the nucleus

Aa, DD, Bb, yy are all examples of _______

• genotypes

• phenotypes

Where is the majority of DNA stored within a cell?

• Chloroplast

• Cell wall

• Cell membrane

• Nucleus

Which of the following is correct?

• Yy is homozygous dominant.

• YY is heterozygous.

• yy is homozygous recessive.

• YY is homozygous recessive.