Why are all the people on earth members of t he same biological species?

a. all people have the same genetic makeup.

b. all people originated from the continent of africa.

c. all people have adaptations that allow them to live anywhere on earth.

d. all people can mate with one another and have children.

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.