Best answer: How can it be explained that two purple flowers can produce a flower that is white?

Each gene can have different alleles. For example, one gene determines flower color in pea plants. Different versions of that same gene are alleles. The two different alleles here are purple flowers and white flowers.

How can two parent purple flowers have white flower offspring?

Only offspring with the bb genotype will have the white-flower phenotype. Therefore, in this cross, you would expect three out of four (75 percent) of the offspring to have purple flowers and one out of four (25 percent) to have white flowers.

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What are the chances that two white flower pp pea plants could produce a purple flower pea plant?

a. A heterozygous purple plant is crossed with a homozygous purple plant. b. A cross between two pea plants produces offspring in which approximately 50% of the flowers are white and 50% are purple.

What is the phenotype of purple flowers are dominant to white flowers?

Here, purple flower is dominant and white flower is recessive in pea plants. Therefore, the presence of atleast one P allele will give purple colour (dominant phenotype) to the flower. Thus, the PP is a homozygous dominant genotype. Hence, the phenotype of PP is purple colour.

When a plant with purple flowers was crossed with white flowers?

A plant with purple flowers was crossed with white flowers producing 50 plants with only purple flowers. On selfing these plants produced 482 plants with purple flowers and 162 plants with white flowers.

Are purple flowers dominant or recessive?

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Trait Dominant Expression Recessive Expression
Color of flower (P) Purple White
Form of ripe pods (I) Inflated Constricted
Color of unripe pods (G) Green Yellow
Position of flowers (A) Axial Terminal

What is the probability of an offspring with white flower pp If two heterozygous purple flowers PP are crossed?

The F1 generation will be entirely heterozygous, thus the F2 generation is the result of a heterozygous self-cross. A Punnet square reveals that 75% of the generation will be purple (PP or Pp) and 25% will be white (pp). Of the three purple flowers in the punnett square, two of them are heterozygous for color (Pp).

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What is the probability of the plants with purple flowers?

Checking the probability of fusion between the gametes produced by two plants crossed using Punnet Square method, it is seen that 75% plants will have at least one dominant allele (P) and thus will bear purple flowers. Only 25% plants will have recessive allele in homozygous state (pp).

What is the expected ratio of purple flowered PP and PP to white flowered pp offspring?

The F1 generation will be entirely heterozygous, thus the F2 generation is the result of a heterozygous self-cross. A Punnet square reveals that 75% of the generation will be purple (PP or Pp) and 25% will be white (pp). Of the three purple flowers in the punnett square, two of them are heterozygous for color (Pp).

When Mendel crossed true-breeding purple and white flowered pea plants the dominant to recessive ratio in the F1 generation was?

Mendel proposed the Law of Segregation after observing that pea plants with two different traits produced offspring that all expressed the dominant trait, but the following generation expressed the dominant and recessive traits in a 3:1 ratio.

How can two parents with a dominant phenotype produce offspring with a recessive phenotype?

One allele for every gene in an organism is inherited from each of that organism’s parents. … The dominance or recessivity associated with a particular allele is the result of masking, by which a dominant phenotype hides a recessive phenotype.

How do dominant and recessive genes work?

Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

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Which of Mendel’s laws explains how a plant with purple flowers crossed with a plant with white flowers can have purple flowered offspring only?

Mendel explained what he saw using the law of segregation. Each gene can have different alleles. … The two different alleles here are purple flowers and white flowers. Each plant has two copies of each gene: one copy from each parent plant.

What could be the reason for getting purple flowers after the crossing of purple Coloured flower with white Coloured flower in F1 generation?

Step by step answer:In this cross, purple colour dominates over white colour flowers so F1 generation contains all the purple flowers. … It is not clear which gene will be passed on to the zygote so both white and purple colour over are formed.

How can a pure breed be represented symbolically explain by taking the example of purple and white flowers?

A pure breed is the one which is homozygous for the desired trait. A pure purple flower trait can be represented by PP and white flower by pp. This is because purple colour is dominant, white colour is recessive and for pure breed they are homozygous.