The genotype of a normal male zygote is XY, with the X chromosome (sex chromosome) coming from the mother and Y from the father.
Your answer is Enamel it is the coating on teeth that helps prevent damage.
The correct answer is -
E. double coincidence of wants
D. the 4 types of tissues in the body are: muscle, nerve, connective and epithelial
For the first question, it's D. And the second question it's C.
