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Evolution

Question

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A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

Only daughters

Only sons

Both sons and daughters

Only grandchildren

Solution

C.

Both sons and daughters

(i) Woman is a carrier
(ii) Both son & daughter inherit X–chromosome
(iii) Although only son be the diseased\

$X^{c} X x X Y ↓ X^{c} X X^{c} Y X X X Y$

Some More Questions From Evolution Chapter

Mention the type of nutrition in the cells originated first during the origin of life.

Which group of organisms were responsible for appearance of free oxygen in the atmosphere of the primitive earth ?

What is meant by the term fossil ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

Name the different eras of geologic time scale.

What is single step large mutation?

Consider a thorn in Bougainvillea and a tendril in cucurbita. Are these two organs homologous or analogous ? Give reason.

Give two examples that represent adaptive radiation.

Which theory attempts to explain to us the origin of universe?

Evolution is a discontinuous process. Is it correct ?

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