Congenital deafness in human beings is inherited as a recessive condition. Two deaf individuals, each homozygous for a recessive mutation, get married and produced four children with normal hearing. Propose an explanation for why none of their children are deaf.

During binary fission, what events must occur before the cell splits into two new cells?

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.