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)

Question

Responses.

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

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

Answer 1

Based on the information provided about the alleles for flower color in pea plants, we can analyze the statements regarding genotype and phenotype.

1. If a plant has purple flowers, its genotype can be either PP (homozygous dominant) or Pp (heterozygous) since purple (P) is dominant.
2. If a plant has white flowers, its genotype must be pp (homozygous recessive) since white (p) is recessive.

Therefore, the accurate conclusion from the statements provided is:

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

This is the only definitive conclusion that can be drawn; the other statements about purple flowers being PP or Pp are not accurate, as both genotypes (PP and Pp) result in a purple flower phenotype.

Answer 2

What is a phenotype of an organism?(1 point)
Responses

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

a combination of alleles
a combination of alleles

an observable trait
an observable trait

a section of DNA

Answer 3

The correct response to the question "What is a phenotype of an organism?" is:

an observable trait.

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

Answer 4

What is an allele?(1 point)
Responses

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

a form of a gene
a form of a gene

a dominant form of a gene
a dominant form of a gene

the trait a gene controls

Answer 5

The correct response to the question "What is an allele?" is:

a form of a gene.

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

Answer 6

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

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 A will be the tallest.

Answer 7

To determine the most reasonable prediction about the heights of the three plants based on their genotypes:

• Plant A (tt): This plant has a homozygous recessive genotype, which typically corresponds to the shorter phenotype (in this case, short height).
• Plant B (TT): This plant has a homozygous dominant genotype, which typically corresponds to the tallest phenotype (in this case, tall height).
• Plant C (Tt): This plant has a heterozygous genotype, which typically will also correspond to the tall phenotype, similar to Plant B, but may be slightly shorter than Plant B depending on dominance relationships.

Based on this information, the most reasonable prediction would be:

Plant A will be the tallest.

This statement is incorrect based on the dominance of the alleles; Plant B is expected to be the tallest.

The correct answer from the options would be:

Plant C will be the shortest.

This would be the most reasonable assertion, considering Plant A (tt) is short and Plant C (Tt) is expected to be taller than Plant A but shorter than Plant B, making Plant C the middle in height predictions. Thus, while Plant C is not the shortest, from the choices given, the closest might be that Plant A will be shorter than Plant C, as Plant B is always the tallest.

So, the best inference is: Plant A and Plant C will have similar heights.

This is likely true as Plant A is short, and Plant C is shorter than Plant B, close to Plant A's height while not explicitly stated before. Other combinations (like Plant A being the tallest) are outright contradictions based on the allele dominance.