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प्रश्न
One of the following traits cannot be inherited. This one is:
विकल्प
colour of eyes
colour of skin
size of body
nature of hair
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उत्तर
size of body
Explanation:
Inherited traits are passed from parents to offspring through genes. The colour of eyes, colour of skin, and nature of hair are inherited traits. However, the size of the body is greatly influenced by environmental factors such as nutrition, exercise, and health, so it is not considered a purely inherited trait.
संबंधित प्रश्न
In one of his experiments with pea plants, Mendel observed that when a pure tall pea plant is crossed with a pure dwarf pea plant in the first generation, F1, only tall plants appear.
(a) What happens to the traits of the dwarf plants in this case?
(b) When the F1-generation plants were self-fertilised, he observed that in the plants of the second generation, F2, both tall plants and dwarf plants were present. Why it happened? Explain briefly.
Name the information source for making proteins in the cells.
List any two contrasting characters other than height that Mendel used in his experiments in pea plants.
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?
Name the first scientist who studied the inheritance of traits from one generation to the next.
Fill in the following blank with suitable word .
In pea plants, the gene for dwarfness is ..............whereas that for tallness is ............ .
What is the genotype of dwarf plants whose parental cross always produces tall offspring?
Gregor Mendel's first law of genetics states "Of a pair of contrasted characters, only one can be represented in a gamete by its internal 'factor' State where these factors are found in gametes.
How do Mendel's experiments show that traits may be dominant or recessive?
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
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..
The farmers have been cultivating a food plant X for over two thousand years and have produced as many as five entirely different looking vegetables A, B, C, D and E from it.
(a) What could the plant X be?
(b) What are A, B, C, D and E?
(c) What is the process of evolution involved in this example known as?
"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.
What is genetics?
Assertion: When pure breed tall plants are crossed with pure breed short plants, all the plants in F1 progeny are tall. When the tall plants of F1 progeny are crossed, short plants re-appear in F2 progeny.
Reason: Traits are independently inherited.
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?
A cross between pea plant with white flowers (vv) and pea plant with violet flowers (VV) resulted in F2 progeny in which ratio of violet (VV) and white (vv) flowers will be ______.
