Biology, 19.03.2020 08:36 fallenangelsayshush

A plant breeder is trying to develop a deep purple violet. She knows the violets come in deep purple, light purple, and white. She crosses two violets hoping to produce only the deep color. Which parent plants should she use? At least one parent must be pp. Both parents must be Pp. At least one parent must be Pp. Both parent must be PP.

Answers: 2

Show answers

Answers

Answer from: allisonhall0925

The correct answer is: Both parent must be PP.

Explanation:

The given question states that for flower color of the violet plants there are three phenotypes possible, purple, light purple and white.The flower color coding gene is governed by two variants or alleles in which there is an absence of complete dominance of one allele over the other as, if complete Mendelian dominance was there, only two phenotypes for flower color would have existed, purple and white, without the existence of any intermediate color, light purple.This indicates the existence of a Non-Mendelian pattern of inheritance with respect to the gene encoding for the violet flower color.As the intermediate phenotype of flower color is light violet, it indicates that in these plants neither of the two alleles are capable of showing dominance and this is an example of Incomplete dominance.Let the two alleles of the flower color coding gene be: P and p.Then the possible genotypes are: PP, Pp, pp.The corresponding phenotypes are: Purple, Light purple and White.Crossing all possible parents,

1. P P

P PP PP

Phenotypes (Purple) (Purple)

P PP PP

Phenotypes (Purple) (Purple)

2. P P

P PP PP

Phenotypes (Purple) (Purple)

p Pp Pp

Phenotypes (Light Purple) (Light Purple)

3. P p

P PP Pp

Phenotypes (Purple) (Light Purple)

p Pp pp

Phenotypes (Light Purple) (White)

4. P P

p Pp Pp

Phenotypes (Light Purple) (Light Purple)

p Pp Pp

Phenotypes (Light Purple) (Light Purple)

5. P p

p Pp pp

Phenotypes (Light Purple) (White)

p Pp pp

Phenotypes (Light Purple) (White)

6. p p

p pp pp

Phenotypes (White) (White)

p pp pp

Phenotypes (White) (White)

According to the results of the above crosses, we find that the plant breeder should use such parents which are homozygous for the P allele, that is, both the parents must have the PP genotype. Then only all the offspring produced by crossing these parents will develop purple colored violet only.

Answer from: Quest

Schist. hope it

Answer from: Quest

i think the answer would be d

Another question on Biology

Biology, 22.06.2019 09:20

Which type of respiration takes place when there is no oxygen present? a. anaerobic b. mitochondrial c. cellular d. aerobica. anaerobic

Answers: 2

Answer

Biology, 22.06.2019 11:00

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

Answers: 3

Answer

Biology, 22.06.2019 17:20

Can yall plz me on this question im having a hard time think about it

Answers: 1

Answer

Biology, 22.06.2019 21:10

When wind creates a sand dune, the sheltered side of the dune is less steeply sloped than the windward side has the same incline as the windward side is more steeply sloped than the windward side

Answers: 3

Answer

You know the right answer?

A plant breeder is trying to develop a deep purple violet. She knows the violets come in deep purple...

Questions