Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. These structural similarities are an example of ________.

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#Question id: 10657

#Section 2: Evolution

Assuming these age-structure diagrams describe human populations, in which population is unemployment likely to be a societal issue in the future?

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#Question id: 16817

#Section 4: Behavioural Ecology

Name the term which is given to the plants that grow at right angles to the direction of gravity.

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#Question id: 8917

#Section 2: Evolution

The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?

1. identity and position of paired appendages in protostome embryos

2. formation of water channels in sponges

3. anterior-posterior orientation of segments in protostome embryos

4. positioning of tentacles in cnidarians

5. anterior-posterior orientation in vertebrate embryos

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#Question id: 10638

#Section 2: Evolution

Following some statement is given

A- Mortality rate constant over age group 

B- Greater proportional survival at older age

C. Follow type III survivorship curve

D. Follow type II survivorship curve

Which of the following above statement is correct?

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#Question id: 3312

#Section 2: Evolution

Hardy-Weinberg equilibrium, the frequencies of the two alleles A1 and A2 is 0.4 and 0.6. When you consider A2 is dominant allele of genetic disorder. The frequency of defected individuals, in population size 1000 is