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Tendrils of Cucurbita and thorns of Bougainvillea are

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Important Questions on Evolution

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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 36

The following structures shows that

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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 37
A living connecting link that provides evidence of organic evolution is
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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 38
The splint bone of present day horse is a vestige of :
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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 39
Vestigial organs occur as
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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 40
Occurrence of vestigial organs is not explained by
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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 41
Vestigial pelvic girdle and bones of hind limbs are the characteristics of
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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 42

Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

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Random unidirectional change in allele frequencies that occur by chance in all population and especially in small populations is known as

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NTA Errorless Biology Volume-2>Chapter 7 - Evolution>Ordinary Thinking>Q 43
Archaeopteryx, a transitional fossil between birds and reptiles was discovered from the rocks of following period :