HARD
10th CBSE
IMPORTANT
Earn 100

A monohybrid cross is conducted between one variety of pea plants having pods that are full (FF) and another having pods that are constricted (ff).

What is the percentage of heterozygous offspring in the F1 generation?

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Important Questions on Heredity

MEDIUM
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 7
Two tall pea plants are used to produce a progeny of 20 pea plants. The two parent plants have a genotype of TT and Tt respectively.
How many short pea plants will be found In the progeny in the F1 generation?
MEDIUM
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 8
Plants that reproduce through asexual reproduction give rise to similar and not identical offsprings. What could be the most likely reason for the above statement to be true?
MEDIUM
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 9
Pea plants can have green or yellow seeds. One of the phenotypes shows dominance over the other. A farmer decides to pollinate a flower of a plant with green seeds using pollen from a flower of a plant with yellow seeds. The resulting pod has all green seeds.
What should be the genotype of the parent plants to give green and yellow seeds in equal proportions?
MEDIUM
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 10
The farmer crosses two heterozygous green seeded plants and obtains 100 plants in the F1 generation. What would be the number of green and yellow seeds respectively in the F1 generation?
MEDIUM
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 11
Sex determination in humans happens through sex chromosomes. Along with other parameters, such processes often help in forensic studies in crime investigation and / or identification of accidents and natural calamities. In order to determine whether an accident victim is male or female, which cells can be used and why?
HARD
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 12
When 500 plants are produced in the F2 generation of monohybrid cross, the number of homozygous recessive plants obtained is
HARD
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 13
Which of the following statement is incorrect?
HARD
10th CBSE
IMPORTANT
Science Textbook of Competency Based Questions for Class X>Chapter 9 - Heredity>Exercise>Q 14
The following results were obtained by a scientist who crossed the F1 generation of pure-breeding parents for round and wrinkled seeds.
Dominant trait Recessive trait Number of F2 offspring
Round seeds Wrinkled seeds 7524
From these results, it can be concluded that the actual number of round seeds he obtained was