THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
true
|
|
|
false
|
Detailed explanation-1: -The presence of similar Hox genes in different species reflects their common ancestry: a Hox gene cluster was likely already present in a common ancestor of mice, flies, humans, and other animal groups.
Detailed explanation-2: -What might happen when a Hox gene turns other genes on or off? A small change in what a Hox gene does can cause a large change in an organism. If a Hox gene turns off a gene for wings in an insect larva, the adult insect will probably not have wings.
Detailed explanation-3: -What do hox genes act like? Genetic switches that turn on and off other genes. So control the timing and route of development. Maintained by evolution despite speciation, so they must be very important.
Detailed explanation-4: -What have scientists done with HOX genes to make a leg grow out of a fly’s head? gene acts as a switch that then turns on ‘leg genes’ resulting in the growth of a leg out of the head.