CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Traits

What will be ...

Question

What will be the percentage of gametes having recessive alleles for both the genes, if produced by a plant with genotype TtRr?

A

50%

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

B

12.5%

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

C

25%

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

D

30%

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

Open in App

Solution

The correct option is C 25%
Plants having genotype TtRr produce 4 different kinds of gametes.TR, Tr, tR, tr.
TtRr
↓
Gametes: TR, Tr, tR, tr
One of the four gametes carry recessive alleles for both the characters (tr).
Hence, the percentage of gametes with two recessive alleles is ¼ x 100% = 25%.

Suggest Corrections

thumbs-up

2

Similar questions

Q. Two genes A and B present on same chromosome show

40 %

recombination, then what will be the percentage of gamete

(a B)

for the plant having genotype

A a B b

in cis arrangement?

Q. In a plant, gene ‘A’ is responsible for tallness and its recessive allele ‘a’ for dwarfness and gene ‘B’ is responsible for red coloured flower while its recessive allele ‘b’ for white coloured flower. A tall and red-flowered plant with genotype AaBb is crossed with dwarf and red flower with genotype aaBb. What percentage of their offspring would be dwarf white-flowered?

Q. Two genes A and B present on same chromosome show 30% crossing over, then what will be the percentage of gamete (aB) for the plant having genotype AaBb in the cis arrangement?

Q. The genetic distance between genes

A

B

10 c M

. An organism with

A b

combination of the alleles is crossed with the organism with

a B

combination of alleles. What will be the percentage of the gametes with

A B

allele combination produced by an

F 1

Q. What is the probability of gamete AbC produced by a plant having genotype AaBbCc (If all the genes are situated on different chromosomes)?

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard VIII Biology

Join BYJU'S Learning Program

CrossIcon