Genetics Topic Test

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

• Incomplete Dominance
• Co dominance
• Independent assortment
• Recessive inheritance

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

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

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

• 0%
• 25%
• 50%
• 100%

T = tall and t = short
TT and Tt would result in  the following phenotype

• short
• tall
• both tall and short
• neither tall or short

Which of the following alleles is homozygous recessive?

• Tt
• tt
• TT
• T

What is a phenotype?

• The expression of a trait; physical appearance.
• 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

What characteristic would a child not inherit from parents?

• freckles
• eye color
• hair style
• dimples

Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?

• 50% tall and 50% short
• 75%tall and 25% short
• 100%short

Who is the father of genetics? 

• Charles Darwin 
• Gregor Mendel
• Dimitri Mendeleev 
• Hans Krebs 

What is the passing of traits from parents to offspring known as?

• Heredity
• Genetics
• Punnett Square