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प्रश्न
According to de-Vries what is saltation?
उत्तर
According to de Vries, saltation is a single-step large mutation that leads to speciation
संबंधित प्रश्न
Insects, octopus, planaria and vertebrates possess eyes. Can we group these animals together on the basis of eyes that they possess ? Justify your answer giving reason.
A black mouse mates with a brown mouse, and all the offsprings are black.
(a) Why are no brown offsprings produced?
(b) If two of the black offsprings mate with each other what kind of offspring would you expect and in what proportions? Give reason for your answer.
Write short notes based upon the information known to you.
Evolution
List two differences between acquired traits and inherited traits by giving an example of each.
Multiple choice question.
Gene frequency in a population remain constant due to –
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
The sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as ______
Evolution occurs as a result of mutations in ______.
Theory of inheritance of acquired character was given by:
Which one of the following was not given by Darwin's theory of evolution?
