Genetics SOL Review

The passing of physical characteristics from parents to offspring is called ​ (a)  

• heredity
• dominance
• recessive
• homeostasis

Tags

NGSS.HS-LS3-1

Molecules that contain the genetic code that is unique to every individual. 

• Proteins

• Nucleic Acids (DNA)

• Carbohydrates

• Lipids

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

The letters that represent genes (such as BB, bb, Bb) are called the ​ (a)   . The physical features (such as brown eyes and blue eyes) are called the ​ (b)   .

• genotypes
• phenotypes

Answer explanation

• - genotypes = genes

• - phenotypes = physical appearance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Match the following genetics terms

• Aa

• Homozygous Recessive

• aa

• Genotypes

• Aa, AA, aa

• Phenotypes

• Tall, Short

• Homozygous Dominant

• AA

• Heterozygous

Tags

NGSS.HS-LS3-1

Click all of the offspring with heterozygous genotypes.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the ratio of blue to white-flowered offspring?

• 3:1

• 2:2

• 1:2:1

• 1:3

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What percent of offspring have white flowers?

• 25%

• 50%

• 75%

• 0%

Tags

NGSS.HS-LS3-3

What percent of offspring have blue flowers?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-3

Fur color in cats is controlled by the alleles for black fur (B) and white fur (b). Pretend that we can see all types of inheritance in the three cats shown.

If all 3 cats are HETEROZYGOUS, label the pattern of inheritance for each cat.

a

b

c

Mendelian

Incomplete dominance

Codominance

Answer explanation

They all are Bb:

• - The all black cat would be dominant-recessive (Mendelian inheritance)

• - The gray cat is a "blend" of the traits, which is "incomplete dominance"

• - The black and white cat "shows both" traits, which is "codominance"

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

When a pink and white rose are crossed, what type of inheritance pattern gives offspring with both pink and white petals?

• incomplete dominance
• codominance
• dominant-recessive

Answer explanation

• - codominant - like "coworkers", both traits show up

• - incomplete - the traits blend