STEM203 GENBIO2 TEST

The observable traits of an organism are known as its

• Allele

• Dominance

• Genotype

• Phenotype

Each parent contributes one of the genes for a particular trait. The genes of the pair are called

• Alleles

• Gametes

• Hybrids

• Variables

If green is dominant over purple, then what is the genotype for this individual?

• Purple
• Green
• GG
• gg

A __________ is a segment of DNA that codes for a particular protein, which leads to a particular trait.

• Allele

• Codon

• Gene

• Nucleotide

The hidden trait. You need two of these alleles for the trait to show.

• Dominant

• Recessive

• Hidden

• Overt

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 (tall is dominant to short) 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

Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?

• 25%
• 1%
• 10%
• 0%

What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 

• 50 % Brown Hair and 50% Blond Hair 
• 25 % Brown Hair and 75% Blond Hair 
• 75 % Brown Hair and 25% Blond Hair 
• 0% Brown Hair and 100% Blond Hair 

Mendel's law of ____ states that a random assortment of maternally and paternally derived chromosomes in meiosis results in gametes that have different combinations of these genes.

• dominance

• segregation

• independent assortment

• particular inheritance