MEDIUM
10th CBSE
IMPORTANT
Earn 100

(a) What will you get in the F1 and F2 generations in the following cross?
                 Pure tall pea plant x Pure dwarf pea plant

(b) Is it an example of monohybrid cross or dihybrid cross?

Important Questions on Heredity and Evolution

MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 26
In the F2 generation of a cross, progeny having different traits are produced in the ratio 3:1. State whether it is a monohybrid cross or a dihybrid cross? Give one example of such a cross. 
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 27
What is the genotype of dwarf plants which always produced dwarf offspring, Will it be Tt or tt?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 27
What is the genotype of tall plants which always produced tall offspring, Will it be TT, Tt or tt??
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 27
What is the genotype of (i) dwarf plants, and (ii) tall plants, whose parental cross always produces tall offspring?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 28
If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote?
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 28
What sizes of plants are produced if both parents have genes Tt?
MEDIUM
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 29
In a human, how many chromosomes are present in:
(a) a brain cell?
(b) a sperm in the testes?
(c) an egg which has just been produced by the ovary?
(d) a skin cell?
(e) a fertilised egg?
EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 3 Biology>Chapter 4 - Heredity and Evolution>Short Answer Type Questions>Q 30
Gregor Mendel's first law of genetics states "Of a pair of contrasted characters, only one can be represented in a gamete by its internal 'factor'.
(a) Give the modern name for this 'factor'.
(b) State where these factors are found in gametes.