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प्रश्न
Which of the following statements is not true with respect to variation?
विकल्प
All variations in a species have equal chance of survival
Change in genetic composition results in variation
Selection of variants by environmental factors forms the basis of evolutionary processes.
Variation is minimum in asexual reproduction
उत्तर
All variations in a species have equal chance of survival
Explanation -
Variations are produced due to inaccuracy in DNA copying mechanisms and sexual reproduction. All variations in a species do not confer equal survival advantages. So, the statement given as option (a) is not true for variation.
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संबंधित प्रश्न
Which of the following is an example of ZW – ZZ type of mechanism of sex determination?
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The human animal which has an XY pair of chromosomes is called :
(a) male
(b) hybrid
(c) female
(d) doomed
Which combination of genes in the zygote will produce children with blue eyes?
Explain the haplo-diploid method of sex determination in the honey bee.
XO type of sex determination and XY type of sex determination are examples of ____________.
Human offspring’s sex is determined ______
If a normal cell of the human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be ______
A trait in an organism is influenced by
A zygote which has Y chromosome inherited from the father will develop into a ______.
