MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

What Is Monohybrid Cross?

In Red-White ...

Question

In Red-White flowered cross of Mirabilis jalapa, $F_{2}$ generation has red, pink and white flowered plants in the ratio of

A

1 : 2 : 1

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

1 : 0 : 1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

2 : 1 : 1

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

1 : 1 : 2.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 1 : 2 : 1

A red flowered Mirabilis Jalapa(RR) is crossed to white flowered Mirabilis Jalapa(rr). The F1 individuals are Pink flowered(Rr). When F1 individuals are self crossed, in the F2 generation, 1 plant with red flowers(RR), 2 plants with pink flowers(Rr), 1 plant is with white flowers(rr) are formed. The phenotypic ratio is 1:2:1 and genotypic ration is 1:2:1.
So, the correct option is ‘1:2:1’.

Suggest Corrections

thumbs-up

0

Similar questions

Q. In Mirabilis jalapa when homozygous red flowered and white flowered plants are crossed, all F

_{1}

plants have pink coloured flowers. In F

_{2}

produced by selfing of F

_{1}

plants, red, pink, white flowered plants would appear respectively in the ratio of

Q. In Mirabilis jalapa when two

F_{1}

pink flowered plants were crossed with each other, the

F_{2}

generation produced 40 red, 80 pink and 40 white flowering plants. This is a case of

Q. In Mirabilis jalapa, a red-flowered plant was crossed with a white-flowered plant, which resulted in all pink-flowered plants.

What are the chances of the appearance of red-flowered plants in a cross between pink-flowered and white-flowered plants?

Q. What will be the ratio in F

_{2}

generation, if red-flowered variety of Mirabilis jalapa is crossed with white-flowered variety?

Q. What are the chances of the appearance of red-flowered plants when a cross is made between pink-flowered and white-flowered Mirabilis jalapa plants?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Mendel's Experiments

BIOLOGY

Watch in App

explore_more_icon

Explore more

What Is Monohybrid Cross?

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon