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Heredity And Evolution

Question

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Explain with the help of an example each, how the following provides evidence in favour of evolution:
Analogous organs

Solution

These organs have different origin and different basic structure but perform the same function. For example, wings of birds and wings of bats (bird wings are made of feathers while bat wings are the folds of skin) have a different structure but perform the same function of flying. Thus, these organs provide evidence for evolution that they are different in origin but evolve to perform the same function to survive in hostile environmental conditions.

Some More Questions From Heredity and Evolution Chapter

Distinguish between the acquired traits and the inherited traits in tabular form, giving one example for each.

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Homologous organs

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Analogous organs

Explain with the help of an example each, how the following provides evidence in favour of evolution:
Fossils

How do Mendel’s experiments show that
Traits may be dominant or recessive?

How do Mendel’s experiments show that
Inheritance of two traits is independent of each other?

Select the set of homologous organs from the following:

If you focus the image of a distant object, whose shape is given
below, on a screen using a convex lens,

the shape of the image of this object on the screen would be:

A Mendelian experiment consisted of breeding pea plants bearing violet flowers with pea plants bearing white flowers. What will be the result in F₁ pregeny?

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