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Question

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 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.

Answer 1

The correct conclusion that can be drawn from the information given is:

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

This is because the white flower phenotype is expressed only when the plant has two recessive alleles (pp). If a plant has purple flowers, it can either have the genotype PP (homozygous dominant) or Pp (heterozygous), so conclusions cannot be definitively made about its genotype based solely on the purple flower phenotype. However, for white flowers, the only possible genotype is pp.

Answer 2

a b c or d

Answer 3

The correct response is:

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

Answer 4

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

Answer 5

The correct response is:

an observable trait.

The phenotype of an organism refers to the observable characteristics or traits that result from the interaction of its genotype with the environment.

Answer 6

What is an allele?(1 point)
Responses

the location of a gene on a chromosome
the location of a gene on a chromosome

the trait a gene controls
the trait a gene controls

a form of a gene
a form of a gene

a dominant form of a gene

Answer 7

The correct response is:

a form of a gene.

An allele is one of the different versions or forms of a gene that can exist at a specific locus on a chromosome.

Answer 8

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

Plant C will be the shortest.
Plant C will be the shortest.

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

Plant A will be the tallest.

Answer 9

The most reasonable prediction about the three plants based on their genotypes is:

Plant A and Plant C will have similar heights.

Here's the reasoning:

• Plant A has the genotype tt, which means it is homozygous recessive and will express the trait associated with the recessive allele (short height).
• Plant B has the genotype TT, which means it is homozygous dominant and will express the dominant trait (tall height).
• Plant C has the genotype Tt, which is heterozygous and will also express the dominant trait (tall height).

Since Plant A (tt) will be short and Plant C (Tt) will be tall, the most reasonable conclusion is that Plant A and Plant C will not have similar heights.

Plant C (Tt) will be taller than Plant A (tt).

The accurate response based solely on the genotypes provided is actually:

Plant C will not be the shortest.

Plant B will be the tallest.

However, the best match from the original responses considering Plant C's height compared to Plant A is:

Plant B and Plant C will have similar heights.

This is because Plant B (TT) will be tall and Plant C (Tt) will also be tall, so they will share a similar height.

If you want a definitive conclusion, please specify the options again for clearer guidance.