Do mutations in body cells contribute to genetic variation?(1 point)

Question

Responses

No, the mutations cannot be passed to offspring and only affect the individual.
No, the mutations cannot be passed to offspring and only affect the individual.

Yes, the mutations can be passed on to offspring and contribute to variation in the population.
Yes, the mutations can be passed on to offspring and contribute to variation in the population.

Yes, these body cell mutations lead to mutations in the gametes.
Yes, these body cell mutations lead to mutations in the gametes.

No, the causes of body cell mutations are outside the body and cannot alter DNA.
No, the causes of body cell mutations are outside the body and cannot alter DNA.

Answer 1

The correct response is:

No, the mutations cannot be passed to offspring and only affect the individual.

Mutations in body cells (also known as somatic mutations) do not contribute to genetic variation in the population because they are not inherited by offspring; they only affect the individual in which they occur.

Answer 2

A garden contains 40 flowers, 30 of which are red. What is the frequency of red flowers?(1 point)
Responses

0.25
0.25

1.0
1.0

0.75
0.75

0.5
0.5

Answer 3

To calculate the frequency of red flowers in the garden, you divide the number of red flowers by the total number of flowers.

Number of red flowers = 30
Total number of flowers = 40

Frequency of red flowers = Number of red flowers / Total number of flowers
Frequency of red flowers = 30 / 40 = 0.75

So the correct response is:

0.75

Answer 4

A tall pea plant results from a dominant tall allele while the short phenotype results from two recessive alleles. What is the frequency of short offspring (pp) when a tall pea plant with one tall allele (Pp) is cross-pollinated with a short pea plant (pp)?(1 point)
Responses

0.75
0.75

0.5
0.5

1.0
1.0

0.25

Answer 5

To determine the frequency of short offspring (pp) when a tall pea plant (Pp) is cross-pollinated with a short pea plant (pp), we can use a Punnett square.

1. Parent Genotypes:

   • Tall plant: Pp (heterozygous, one tall allele and one short allele)
   • Short plant: pp (homozygous recessive)

2. Gametes:

   • Pp can produce gametes: P or p
   • pp can only produce gametes: p

3. Punnett Square:

         P      |      p      
      ---------------------
   p |    Pp   |    pp    
      ---------------------
   p |    Pp   |    pp    
   

4. Offspring Genotypes:

   • Pp (tall): 2
   • pp (short): 2

5. Frequency of Short Offspring (pp):

   • There are 2 pp out of a total of 4 offspring.
   • Frequency of short offspring = 2/4 = 0.5

Thus, the correct response is:

0.5

Answer 6

In a moth population, 47 are brown, 15 are yellow, and 34 are black. What is the approximate probability of a moth being black? (Round your answer.)(1 point)
Responses

2%
2%

16%
16%

49%
49%

35%

Answer 7

To find the probability of a moth being black, you can use the following formula:

\[ \text{Probability of being black} = \frac{\text{Number of black moths}}{\text{Total number of moths}} \]

1. Number of black moths: 34
2. Total number of moths: \( 47 , (\text{brown}) + 15 , (\text{yellow}) + 34 , (\text{black}) = 96 \)

Now, calculate the probability:

\[ \text{Probability of being black} = \frac{34}{96} \approx 0.3542 \approx 35% \]

Thus, the correct response is:

35%

Answer 8

What is the term used to describe any living or nonliving things that influence another living organism?(1 point)
Responses

variation
variation

frameshift mutations
frameshift mutations

distribution
distribution

environmental factors
environmental factors

Answer 9

The term used to describe any living or nonliving things that influence another living organism is:

environmental factors.

Answer 10

Check whether each statement is describing mitosis or meiosis.(8 points)
Mitosis Meiosis
The type of cell division that produces body cells

Results in cells with 46 chromosomes

Results in cells with 23 chromosomes

Results in cells with identical genetic material

Results in cells with unique combinations of genetic material

Results in 2 diploid cells

Results in 4 haploid cells

The type of cell division that produces gametes

Answer 11

Here’s how each statement is categorized as describing mitosis or meiosis:

| Statement | Mitosis | Meiosis | |---------------------------------------------------------------|---------|---------| | The type of cell division that produces body cells | ✅ | | | Results in cells with 46 chromosomes | ✅ | | | Results in cells with 23 chromosomes | | ✅ | | Results in cells with identical genetic material | ✅ | | | Results in cells with unique combinations of genetic material | | ✅ | | Results in 2 diploid cells | ✅ | | | Results in 4 haploid cells | | ✅ | | The type of cell division that produces gametes | | ✅ |

So, Mitosis produces body cells and results in diploid cells, while Meiosis produces gametes and results in haploid cells with unique genetic combinations.