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प्रश्न
If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY) the seeds produced in F1 generation are
विकल्प
round and yellow
round and green
wrinkled and green
wrinkled and yellow
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उत्तर
round and yellow
Explanation -
From the cross between a round, green seeded pea plant (RR yy) and wrinkled, yellow seeded pea plant, (rr YY),
| Parents |
RRyy Round and Green |
x |
rr YY Wrinkled and yellow |
| Gametes | Ry | rY | |
| F1 generation |
RrYy Round and yellow seed |
F1 generation plants will produce round and yellow seeds.
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संबंधित प्रश्न
"A trait may be inherited, but may not be expressed." Justify this statement with the help of a suitable example.
How did Mendel interpret his results to show that traits may be dominant or recessive? Describe briefly.
Define heredity.
Name the information source for making proteins in the cells.
How did Mendel explain that it is possible that a trait is inherited but not expressed in an organism?
Name the first scientist who studied the inheritance of traits from one generation to the next.
Using height (tallness/dwarfness) of a plant as an example, show that genes control the characteristics or traits in an organism.
It it an example of monohybrid cross or dihybrid cross?
Give the contrasting traits of the following characters in pea plant and mention which is dominant and which is recessive:
Yellow seed
Give the contrasting traits of the following characters in pea plant and mention which is dominant and which is recessive :
Round seed
Why did Mendel choose pea plants for conducting his experiments on inheritance?
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..
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?
Define Heredity. Give two examples.
What will be the number of chromosomes present in each gamete produced by the plants if the palisade cells of a species of the plant contain 28 chromosomes in all?
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
Mendel crossed pea plants with two pairs of contrasting characters.
| RRYY | × |
rryy |
| Round, Yellow | Wrinkled, Green |
He observed 4 types of combinations in F2 generation. Which of the combinations were new? Write the conclusion drawn by this experiment.
