Mendelian Genetics Practice

Which of the following is a heterozygous dominant genotype?

• GG

• gg

• GGG

• Gg

D = dimples        d = no dimples 
What is the genotype for a homozygous recessive offspring?

• DD

• Dd

• dd

Tags

NGSS.HS-LS3-1

What do you call the physical expression of a gene?

• genotype

• dominant

• phenotype

• allele

Which of these sets of chromosomes has a HOMOZYGOUS genotype? Check all that apply.

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

Alternative forms of a gene are called

• Alleles

• Homozygous

• DNA

• Genetics

Tags

NGSS.HS-LS3-1

This is the combination of alleles an organism has for a particular trait.

• genetics

• mitosis

• genotype

• phenotype

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An organism with two different alleles for a trait is called

• heterozygous

• homozygous

• dominant

• recessive

If A is an allele for red fur and a is an allele for white fur, what color fur would a fox with the genotype AA have? (Assume Mendelian inheritance)

• red

• white

• purple

• blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Madison wants to breed her pet phoenixes, but she isn't sure if the babies will burst into blue flames or red flames. Her documents show that her female phoenix is homozygous dominant for red flames, while her male phoenix is homozygous recessive for blue flames. What color flames will the babies have?

• Red

• Blue

• Purple

• 50% Red, 50% Blue

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Both parents in this Punnett square

• are homozygous dominant

• are homozygous recessive

• are heterozygous

• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2