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प्रश्न
What is the genotype of tall plants which always produced tall offspring
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उत्तर
TT is the genotype of tall plants which always produces a tall offspring.
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संबंधित प्रश्न
How do Mendel's experiment show that traits are inherited independently?
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
How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?
To perform an experiment to identify the different parts of an embryo of a dicot seed, first of all you require a dicot seed. Select dicot seeds from the following group:
Wheat, Gram, Maize, Pea, Barley, Ground-nut
(A) Wheat, Gram and Pea
(B) Gram, Pea and Ground-nut
(C) Maize, Pea and Barley
(D) Gram, Maize and Ground-nut
The gene for red hair is recessive to the gene for black hair. What will be the hair colour of a person if he inherits a gene for red hair from his mother and a gene for black hair from his father?
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?
Give the contrasting traits of the following characters in pea plant and mention which is dominant and which is recessive:
Yellow seed
A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of a ______.
For his experiments on heredity, Mendel used :
papaya plants
potato plants
pea plants
pear plants
The visible characteristic in an organism is known as ______.
Select the statements that describe characteristics of genes :
(i) genes are specific sequences of bases in a DNA molecule.
(ii) a gene does not code for proteins.
(iii) in individuals of a given species, a specific gene is located on a particular chromosome.
(iv) each chromosome has only one gene..
Pure-bred tall pea plants are first crossed with pure-bred dwarf pea plants. The pea plants obtained in F1generation are then cross-bred to produce F2 generation of pea plants.
(a) What do the plants of F1 generation look like?
(b) What is the ratio of tall plants to dwarf plants in F2 generation?
(c) Which type of plants were missing in F1 generation but reappeared in F2 generation?
What are the possible blood groups likely to be inherited by children born to a group A mother and a group B father? Explain your reasoning.
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?
One of the following traits of the parents cannot be passed on to their future generations. This trait is:
What is genetics?
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 a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
What are the components of the DNA molecule?
