Discuss Sir Francis Galton’s contribution to genetics and identify the important concept that is linked to his

observations.What will be an ideal response?


ANSWER: Sir Francis Galton, a cousin of Charles Darwin, studied the inheritance of many traits in
humans. He noticed that children of tall parents were often shorter than their parents and that
children of short parents were often taller than their parents. He noted that children of very
tall or very short parents are usually closer to the average height of the population rather than
the average height of their parents. This important concept is called regression to the mean

Biology & Microbiology

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When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?

A) rising oxygen B) falling oxygen C) rising carbon dioxide D) falling carbon dioxide

Biology & Microbiology

List three contributions of Ferdinand Cohn to the development of microbiology

What will be an ideal response?

Biology & Microbiology

Distinguish between a gene tree and a species tree

What will be an ideal response?

Biology & Microbiology

Which of the following is one way in which the environment may play a role in development?

a. The environment changes the segments in which Hox genes are expressed. b. The presence or absence of neural crest cells in different species is environmentally deter-mined. c. The environment directly induces gene duplications d. Environmental conditions may change the timing of developmental changes.

Biology & Microbiology