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Question 1

A)In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?(1 point)
Responses

If a plant has white flowers, then its genotype must be Pp.
If a plant has white flowers, then its genotype must be Pp .

If a plant has purple flowers, then its genotype must be Pp.
If a plant has purple flowers, then its genotype must be Pp .

If a plant has purple flowers, then its genotype must be PP.
If a plant has purple flowers, then its genotype must be PP .

If a plant has white flowers, then its genotype must be pp.
If a plant has white flowers, then its genotype must be pp .
Question 2
A)What is a phenotype of an organism?(1 point)
Responses

a structure that carries genetic information
a structure that carries genetic information

an observable trait
an observable trait

a combination of alleles
a combination of alleles

a section of DNA
a section of DNA
Question 3
A)What is an allele?(1 point)
Responses

the trait a gene controls

5 answers

Question 1:
The correct response is:
If a plant has white flowers, then its genotype must be pp.
This is true because white flowers are produced only when the plant has two recessive alleles, as the presence of at least one dominant allele (P) would result in purple flowers.

Question 2:
The correct response is:
an observable trait.
Phenotype refers to the observable characteristics or traits of an organism, which can be influenced by both genetic and environmental factors.

Question 3:
The response seems to be cut off. The appropriate definition for an allele is:
a variant form of a gene.
Alleles are different versions of a gene that can produce different traits in an organism (e.g., different alleles for flower color may produce purple or white flowers in pea plants).

If you'd like to provide additional options or clarify this question, feel free!

Question 1
A)In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?(1 point)
Responses

If a plant has white flowers, then its genotype must be Pp.
If a plant has white flowers, then its genotype must be Pp .

If a plant has purple flowers, then its genotype must be Pp.
If a plant has purple flowers, then its genotype must be Pp .

If a plant has purple flowers, then its genotype must be PP.
If a plant has purple flowers, then its genotype must be PP .

If a plant has white flowers, then its genotype must be pp.
If a plant has white flowers, then its genotype must be pp .
Question 2
A)What is a phenotype of an organism?(1 point)
Responses

a structure that carries genetic information
a structure that carries genetic information

an observable trait
an observable trait

a combination of alleles
a combination of alleles

a section of DNA
a section of DNA
Question 3
A)What is an allele?(1 point)
Responses

the trait a gene controls

Question 1:
The correct response is:
If a plant has white flowers, then its genotype must be pp.
This is the only correct conclusion because the presence of white flowers indicates that the plant has two recessive alleles (pp). The other options incorrectly suggest possible genotypes for purple flowers, which can include both homozygous dominant (PP) and heterozygous (Pp).

Question 2:
The correct response is:
an observable trait.
Phenotype refers to the observable characteristics or traits of an organism, influenced by genotype and environmental factors.

Question 3:
You only provided a partial response option. The correct definition is:
an allele is a variant form of a gene.
Alleles are different versions of a gene that may produce varying traits. For instance, the gene that determines flower color in pea plants can have alleles for purple (P) or white (p).

If you need more help or further clarification, feel free to ask!

Use the table to answer the question.

Plant A Plant B Plant C
tt TT Tt
The table shows the genotypes of three pea plants for the allele for height. Which prediction about the three plants is the most reasonable?

(1 point)
Responses

Plant A will be the tallest.
Plant A will be the tallest.

Plant A and Plant C will have similar heights.
Plant A and Plant C will have similar heights.

Plant B and Plant C will have similar heights.
Plant B and Plant C will have similar heights.

Plant C will be the shortest.

In pea plants, the allele for tall height (T) is dominant over the allele for short height (t). Based on the genotypes provided in the table:

  • Plant A: tt (homozygous recessive, short)
  • Plant B: TT (homozygous dominant, tall)
  • Plant C: Tt (heterozygous, tall)

Given this information, the most reasonable prediction is:

Plant C will be the shortest.

This conclusion is drawn because Plant A is homozygous recessive (tt) and will be short, while both Plant B (TT) and Plant C (Tt) will be tall. Therefore, Plant A will definitely be shorter than both Plants B and C, making this statement the most accurate prediction.

Let me know if you need further assistance!