Question 1

Question

A)How are chromosomes and genes alike?(1 point)
Responses

They both contain genetic material.
They both contain genetic material.

They are both part of DNA.
They are both part of DNA.

They are both found on chromatids.
They are both found on chromatids.

They both encode a single protein.
They both encode a single protein.
Question 2
A)In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr? **Make a punnet square for help**(1 point)
Responses

some round and some wrinkled
some round and some wrinkled

slightly wrinkled
slightly wrinkled

round
round

Answer 1

Question 1

A) How are chromosomes and genes alike? (1 point)
Correct Response:
They both contain genetic material.

Question 2

A) In pea plants, the allele for round peas, R, is dominant over the allele for wrinkled peas, r. What is the phenotype of a pea plant with genotype Rr? Make a punnet square for help (1 point)

1. Making the Punnett Square:

| | R | r | |---------|---------|---------| | R | RR | Rr | | r | Rr | rr |

2. Results of the Cross:

• RR (Round Peas)
• Rr (Round Peas)
• Rr (Round Peas)
• rr (Wrinkled Peas)

3. Phenotypic Ratio:

• Round Peas: 3 (RR + Rr + Rr)
• Wrinkled Peas: 1 (rr)

Correct Response:
round

Answer 2

Question 4
A)Which statement is accurate about dominant alleles?(1 point)
Responses

They are expressed only when a recessive allele is not present.
They are expressed only when a recessive allele is not present.

They result in the trait of shortness in pea plants.
They result in the trait of shortness in pea plants.

They are indicated by lowercase letters.
They are indicated by lowercase letters.

They are expressed whenever present.
They are expressed whenever present.
Question 5
A)In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype? **Make a Punnet square for help**(1 point)
Responses

BB
BB

Bb
Bb

BB and bb
BB and bb

bb
bb

Answer 3

Question 4

A) Which statement is accurate about dominant alleles? (1 point)
Correct Response:
They are expressed whenever present.

Question 5

A) In a certain dog breed, the allele B for a black coat is dominant, and the allele b for a spotted coat is recessive. What genotypes for this dog breed would lead to a spotted phenotype? Make a Punnett square for help (1 point)

1. Making the Punnett Square:

Assuming we are crossing two heterozygous individuals (Bb x Bb):

| | B | b | |---------|---------|---------| | B | BB | Bb | | b | Bb | bb |

2. Results of the Cross:

• BB (Black)
• Bb (Black)
• Bb (Black)
• bb (Spotted)

3. Genotype for Spotted Phenotype:
   Only the bb genotype results in the spotted phenotype.

Correct Response:
bb