3.Which one of the following is an example of multiple alleles?
A. Height in pea plant
B. Hair colour in cattle
C. Petal colour in Mirabilis jalapa
D. Wing-size in Drosophila
Answers
Answer:
D is the answer
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Answer:
A gene can have many different alleles within a population. A single organism can only have two alleles because it receives one from each of its parents. However, in a population, there can exist many different forms of a gene. Having multiple alleles for a gene leads to things like many different kinds of hair color and body size.
One very important trait that is controlled by multiple alleles is Blood type. A, B and O are the three alleles and they can come together in different ways to make different blood types: AB, AA, BB, OO, AO, and BO.
This concept of multiple alleles is important in the context of evolution. There has to be an ability for alleles to change so that natural selection can occur. Continued natural selection leads to evolution.