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प्रश्न
Define heredity.
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उत्तर
Heredity is the process by which the biological characters from the parental generation are transmitted to the next generation through genes.
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संबंधित प्रश्न
How do Mendel's experiment show that traits are inherited independently?
List any two contrasting characters other than height that Mendel used in his experiments in pea plants.
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as:
Outline a project which aims to find the dominant coat colour in dogs.
With the help of two suitable examples, explain why certain experiences and traits earned by people during their lifetime are not passed on to their next generations. When can such traits be passed on?
What constitutes the link between one generation and the next?
Name the first scientist who studied the inheritance of traits from one generation to the next.
Name the scientist who gave the laws of inheritance.
How do Mendel's experiments show that traits may be dominant or recessive?
For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
A cross between a tall plant (TT) and short plant (tt) resulted in progeny that were all tall plants because :
(a) tallness is the dominant trait
(b) shortness is the dominant trait
(c) tallness is the recessive trait
(d) height of plant is not governed by gene T or t
Which of the following statement is incorrect?
(a) for every hormone there is a gene
(b) for every protein there is a gene
(c) for production of every enzyme there is a gene
(d) for every type of fat there is a gene
Pure-bred pea plants A are crossed with pure-bred pea plants B. It is found that the plants which look like A do not appear in F1 generation but re-emerge in F2 generation. Which of the plants A and B are : (i) tall, and (ii) dwarf? Give reason for your answer.
List two differences in tabular form between dominant trait and recessive traits. What percentage/proportion of the plants in the F2 generation/progeny were round, in Mendel's cross between round and wrinkled pea plants?
What is genetics?
Write advantages of science of heredity.
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
Which of the following statement is incorrect?
