Advertisements
Advertisements
प्रश्न
Which of the following statements is not true with respect to variation?
पर्याय
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.
APPEARS IN
संबंधित प्रश्न
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
Explain the haplo-diploid method of sex determination in the honey bee.
Explain the mechanism of sex determination in humans with a suitable chart.
Brief about female heterogamety.
Which of the following organisms has haploid number of chromosomes?
Chromosomal constitution of normal human females can be written as ______.
In XO type of sex determination ______.
A zygote which has an X-chromosome inherited from the father will develop into a ______.
The chromosomal constitution of a human female can be written as ______
