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प्रश्न
Name the following:
The basic units of heredity.
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उत्तर
Genes
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संबंधित प्रश्न
A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?
How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?
Mendel said that the characteristics or traits of organisms are carried from one generation to the next by internal factors which occur in pairs. What is the modern name for these factors?
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?
State Mendel's second law of inheritance.
For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. The blood proteins A and B are :
(a) simple dominant and recessive traits
(b) incomplete dominant traits
(c) codominant traits
(d) sex-linked traits
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.
Mendel, in one of his experiments with pea plants, crossed a variety of pea plant having round seeds with one having wrinkled seeds. State Mendel’s observations giving reasons of F1 and F2 progeny of this cross. Also, list any two contrasting characters, other than round seeds of pea plants that Mendel used in his experiments.
