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.
The correct conclusion about phenotype and genotype in pea plants is:
- If a plant has white flowers, then its genotype must be pp.
If a plant has purple flowers, then its genotype must be PP.
The correct conclusion about phenotype and genotype in pea plants with regards to their flower color is:
If a plant has purple flowers, then its genotype must be Pp.
To understand this conclusion, it is important to know that in pea plants, the allele for purple flowers (P) is dominant over the allele for white flowers (p). This means that if an individual has at least one dominant allele (P), it will display the purple flower phenotype. However, if an individual is homozygous recessive (pp), it will display the white flower phenotype.
So, if a plant has purple flowers, it means that it must have received at least one dominant allele (P) from its parents. However, it is not possible to determine if the other allele is also dominant (P) or recessive (p) just by looking at the phenotype. Thus, the genotype of a plant with purple flowers can be either PP or Pp.
Therefore, the correct conclusion is that if a plant has purple flowers, then its genotype must be Pp.
What is a phenotype of an organism?(1 point)
Responses
a combination of alleles
a combination of alleles
a section of DNA
a section of DNA
a structure that carries genetic information
a structure that carries genetic information
an observable trait
An observable trait.
What is an allele?(1 point)
Responses
the trait a gene controls
the trait a gene controls
the location of a gene on a chromosome
the location of a gene on a chromosome
a dominant form of a gene
a dominant form of a gene
a form of a gene
A form of a gene.
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 B and Plant C will have similar heights.
Plant B and Plant C will have similar heights.
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 A will be the tallest.
Based on the given genotypes for the allele for height, the most reasonable prediction would be:
Plant B and Plant C will have similar heights.
Since Plant B is homozygous dominant (TT) and Plant C is heterozygous (Tt), both plants have at least one dominant allele for height. This suggests that they are likely to have similar heights. Plant A, on the other hand, is homozygous recessive (tt), which indicates that it will have a different phenotype for height compared to Plant B and Plant C. Therefore, the most reasonable prediction is that Plant B and Plant C will have similar heights.