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Question
Define Heredity. Give two examples.
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Solution
- Heredity is the transmission of physical or mental traits from parents to offsprings.
- Example: Attached ear-lobes, Rolling tongue.
RELATED QUESTIONS
How do Mendel’s experiments show that the traits may be dominant or recessive?
In a monohybrid cross between tall pea plants (TT) and short pea plants (tt), a scientist obtained only tall pea plants (Tt) in the F1 generation. However, on selfing the F1 generation pea plants, he obtained both tall and short plants in F2 generation. On the basis of above observations with other angiosperms also, can the scientist arrive at a law? If yes, explain the law. If not, give justification for your answer.
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The visible characteristic in an organism is known as :
(a) prototype
(b) stereotype
(c) phenotype
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A cross between a tall plant (TT) and short plant (tt) resulted in progeny that were all tall plants because :
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Select the statements that describe characteristics of genes :
(i) genes are specific sequences of bases in a DNA molecule.
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(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 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.
A red-haired woman marries a brown-haired man, and all the children are brown haired. Explain this genetically.
"It is possible that a trait is inherited but may not be expressed." Give a suitable example to justify this statement.
Hereditary characters are transferred from parents to offspring by ______ hence they are said to be structural and functional units of heredity.
Why are the traits acquired during the life time of an individual not inherited? Explain.
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
In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are
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If a tall pea plant is crossed with a pure dwarf pea plant then, what percentage of F1 and F2 generation respectively will be tall?
Rewrite the correct form of the statement by changing the first or last word only:
The inheritable feature of an organism is termed as heredity.
