Genetics Test Review

What type of inheritance do two alleles have if their traits blend together? 

• Incomplete Dominance
• Co-Dominance
• Mendelian Inheritance
• Homozygous Inheritance

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

• Incomplete Dominance
• Codominance
• Independent assortment
• Recessive inheritance

A plant shows incomplete dominance in size. A tall plant (TT) is crossed with a medium plant (Tt). What fraction of plants will also be tall?

• 100 %
• 75%
• 50%
• 25%

A red flowered plant (RR) breeds with a White flowered plant (rr). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (Rr) flowers?

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS3-1

How are Incomplete Dominance and Co Dominance different than a normal Mendelian cross?

• There is no difference
• The heterozygous genotype has a unique phenotype
• There is no heterozygous genotype
• There is only one phenotype regardless of genotype.

How many alleles does an individual have for each trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-2

A pattern of inheritance in which a trait is carried on one of the sex-determining chromosomes.

• Mendelian Inheritance
• Co-dominance
• Incomplete dominance
• Sex-linked inheritance

The different forms of a gene are called

• traits
• pollinators
• alleles
• hybrids

A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:

• all black
• all white
• all gray
• speckled black and white

Colorblindness is more common in males than in females because the allele for colorblindness is

• dominant and located on the X chromosome.
• recessive and located on the Y chromosome.
• recessive and located on the X chromosome.
• recessive and located on the Y chromosome.    

Tags

NGSS.HS-LS3-1