15
a bond forms when two atoms share one or more pairs of electrons.

a covalent

b electron

c hydrogen

d ionic

Select the correct answer. tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Why does sexual reproduction result in more genetic variation in a species