Advertisements
Advertisements
प्रश्न
One of the following traits of the parents cannot be passed on to their future generations. This trait is:
पर्याय
cleft chin
pointed chin
scarred chin
broad chin
Advertisements
उत्तर
scarred chin
Explanation:
Only genetic (inherited) traits are passed from parents to their offspring through genes. A cleft chin, pointed chin, and broad chin are inherited traits. A scarred chin is an acquired characteristic caused by injury and is not inherited.
संबंधित प्रश्न
How do Mendel’s experiments show that the traits may be dominant or recessive?
Define heredity.
Mendel in one of his experiments with pea plants crossed a variety having round seed with one having wrinkled seeds. Write his observations, giving reasons, of F1 and F2 progeny
A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F1 progeny?
State whether the following statement is true or false :
The sex of an infant is not a case of inheritance of characteristics.
A man having blood group O marries a woman having blood group B and they have a daughter. What will be the blood group of the daughter?
It it an example of monohybrid cross or dihybrid cross?
Why did Mendel choose pea plants for conducting his experiments on inheritance?
When two parents are crossed, the offspring are referred to as :
recessives
test cross
F1 generation
F2 generation
The visible characteristic in an organism is known as ______.
A person first crossed pure-bred pea plants having round-yellow seeds with pure-bred pea plants having wrinkled-green seeds and found that only A-B type of seeds were produced in the F1 generation. When F1generation pea plants having A-B type of seeds were cross-bred by self-pollination, then in addition to the original round-yellow and wrinkled-green seeds, two new varieties A-D and C-B type of seeds were also obtained.
(a) What are A-B type of seeds?
(b) State whether A and B are dominant traits or recessive traits.
(c) What are A-D type of seeds?
(d) What are C-B type of seeds?
(c) Out of A-B and A-D types of seeds, which one will be produced in (i) minimum numbers, and (ii) maximum numbers, in the F2 generation?
Explain Mendel’s law of independent inheritance. Give one example.
Define Heredity. Give two examples.
Answer the following question.
Name the plant Mendel used for his experiment. What type of progeny was obtained by Mendel in F1 and F2 generations when he crossed the tall and short plants? Write the ratio he obtained in F2 generation plants.
Write the advantages of heredity.
Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be
A cross between pea plant with white flowers (vv) and pea plant with violet flowers (VV) resulted in F2 progeny in which ratio of violet (VV) and white (vv) flowers will be ______.
