Genetics 1 Test Review Bio - 2024

In cattle red coats are represented as RR, and white coats are represented as WW.

What is the genotype for Roan color?

• RR

• RW

• WW

Tags

NGSS.HS-LS3-1

A roan cow shows co-dominance in fur color (red and white). What is the phenotype ratio expected if a roan cow and a roan steer mate together?

• 4: Red and White

• 2: Red : 2 White

• 2 Red: 2 Red and White: 0 White

• 1: Red: 2 Red and White: 1 White

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.
Complete a cross between 2 speckled flowers and find the genotype ratio.

• 0 RR: 4 RW: 0 WW
• 2 RR: 2 RW: 0 WW
• 1 RR: 2 RW: 1 WW
• 0 RR: 2 RW: 2 WW

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

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%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is heterozygous?

• RR

• round

• Rr

• wrinkled

• rr

In pea plants, round seeds (R) are dominant to wrinkled seeds (r). Which of the following represents the genotype of a pea plant that is homozygous dominant?

• RR

• round

• Rr

• wrinkled

• rr

Tags

NGSS.HS-LS3-1

In humans, having freckles (F) is dominant to not having freckles (f).

Two people with freckles get married and give birth to three children. Two of the kids have freckles and one does not.

Both parents must have which genotype?

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

Which of these Punnett squares represents a cross between a homozygous dominant parent and a heterozygous parent?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

R = tongue rolling, r = no tongue rolling. An individual who is Rr can roll their tongue.  What type of inheritance pattern does this follow?

• Complete Dominance
• Incomplete Dominance
• Co-Dominance
• Sex-linked

If a man with straight hair marries a woman with curly hair, all of their children have wavy hair.  What type of inheritance pattern does this follow?

• Complete Dominance
• Incomplete Dominance
• Co-Dominance
• Sex-linked

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2