Non-Mendelian Genetics

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

Tags

NGSS.HS-LS3-1

A roan cow shows codominance in fur color (brown and white). What is the phenotype ratio expected in offspring a female roan and a male roan mate together?

• All four would be brown and White

• Half would be orange, half would be white

• 2 Brown: 2 Brown and White: 0 White

• 1 Brown: 2 Brown and White: 1 White

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Dominant alleles are represented by a(n)

• phenotype

• lower case letter

• upper case letter

• punnett square 

A genotype where only recessive alleles

were passed on from both parents for one trait

bb aa tt ll

• Heredity

• Homozygous Dominant

• Homozygous Recessive

• Phenotype

Tags

NGSS.HS-LS3-1

The expression of a trait (what you see) in an organism is called​ (a)  

• phenotype.

• genotype.

• homozygous.

• heterozygous.

Match the following terms or concepts with the correct definition or description.

• Genetics

• An organism that has ONE dominant and ONE recessive allele for a gene

• Heterozygous

• Threadlike structures that contain DNA found in the nucleus of a cell

• Chromosomes

• The scientific study of heredity

• Homozygous

• An organism that has TWO of the SAME alleles for a gene

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Match the following

• gene combination

• genotype

• comparison of 2 or more things

• ratio

• alternate forms of a gene

• phenotype

• physical trait

• allele

Tags

NGSS.HS-LS4-3

Green peas are dominant (G) to yellow peas (g). What is the genotype for a hetereozygous dominant offspring?

• Gg

• gg

• GG

Tags

NGSS.HS-LS3-1

Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?

• RR

• Rr

• rr

Tags

NGSS.HS-LS3-1

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3