GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
height
|
|
|
skin colour
|
|
|
tongue rolling
|
|
|
weight
|
Detailed explanation-1: -The ability to roll the tongue, and blood groups, are examples of discontinuous variation.
Detailed explanation-2: -Human blood group is an example of discontinuous variation. In the ABO blood group system, only four blood groups are possible (A, B, AB or O). There are no values in between, so this is discontinuous variation.
Detailed explanation-3: -Discontinuous variation refers to things like eye colour or blood group, which have a limited number of possible values. In other words, a person’s blood can be A, B, AB or O, but it can’t be anything in between.
Detailed explanation-4: -Examples of discontinuous variation include a person’s blood group or the color of a species of bird. These variations can exist for two major reasons. They could be purely random genetic changes, or they can be traits that have been influenced and selected by the environment.
Detailed explanation-5: -Examples. Weight, height, and length of organisms are examples of continuous variation while the color of petals, blood groups of animals, the gender of animals, etc.