You are a population geneticist and you have recently visited a remote pacific island where you have discovered a race of giant purple-skinned, seven-toed, three-horned dragons. in examining the new race you have discovered that a small number of the dragons have only six toes as opposed to seven and it seems to be genetically inherited trait. after a population survey, you have found that in a population of 1,378 dragons, 174 of them have only six toes. assuming the six-toed organisms are carrying a recessive trait, calculate the gene frequencies and the percentage of homozygous dominant, heterozygous, and recessive individuals on the island

Use the Hardy Weinburg equation of allelic frequency.

P2+2pq+q2=1

174/1378 = 0.126 = q2

Therefore q2 = 0.126; q = 0.355

If q = 0.355 and we understand that p + q = 1, then

P = 1 – 0.355 = 0.645

To find homozygous dominant population (p2);

(0.645)2 x 1378 = 0.416 x 1378 = 573

Heterozygous popualiton (2pq);

(2 x 0.645 x 0.355) x 1378 = 0.458 x 1378=  631

Recessive indviduals (q2) =  174

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

hope this

tobey