Genetics Practice

When one trait overpowers another trait, that trait is said to be?

• Recessive

• Dominant

• Better

• Nothing

If both of your parents are short and you are short, does that mean you are short because of environmental factors or genetic factors?

• Environmental

• Both

• Neither

• Genetic

A change in the DNA of an organism is called

• new DNA

• protein

• mutation

• nothing

Which of the following shows the best order of control

• DNA controls protein which controls a trait

• a trait controls a protein

• DNA controls a trait

• DNA controls a trait which controls protein

Organisms that have two different alleles are said to be what?

• homozygous dominant

• homozygous recessive

• heterozygous

• hybrid

In sexual reproduction, an offspring's traits are a result of?

Is having a recessive trait ALWAYS considered to be unhealthy

Both of your parents have dark skin, as well as your identical sister and grandparents. You have lighter skin but spend most of the time indoors. Is the skin color difference due to environmental factors or genetic factors?

• Environmental

• Both

• Neither

• Genetic

What contains all the different alleles/genes for heredity in a cell?

• Punnetts

• Vacuoles

• Meiosis

• Chromosomes

Which of the following is a heterozygous genotype?

• HH

• rr

• Ss

• Pink