EVOLUTION
HARDY WEINBERG EQUILIBRIUM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
comparative anatomy
|
|
|
comparative biochemistry
|
|
|
comparative embryology
|
|
|
geographic distribution
|
Detailed explanation-1: -The giraffe possesses a unique body plan with an extraordinarily long and flexible neck. However, the giraffe neck, like the human, basically consists of just seven bony cervical vertebrae.
Detailed explanation-2: -Even though the neck of a giraffe can be eight feet long and weigh up to 600 pounds, they only have seven neck vertebrae-the same number of neck bones that humans have!
Detailed explanation-3: -This is ‘natural selection’. Consider the giraffe, for example. A Darwinian theory of evolution posits that it was through random variation that some giraffes had longer necks than others. Thanks to their long necks, they were able to reach leaves high up in the trees in their environment.
Detailed explanation-4: -Both giraffes and humans have seven vertebrae in their necks.