How does the structure of DNA determine the structure of RNA? A- The nucleotide sequence of DNA determines the nucleotide sequence of RNA because only the bases cytosine in DNA and uracil in RNA will pair together when DNA acts as a template for constructing RNA.

B- The nucleotide sequence of DNA determines the nucleotide sequence of RNA because only the bases uracil in DNA and guanine in RNA will pair together when DNA acts as a template for constructing RNA.

C- The nucleotide sequence of DNA determines the nucleotide sequence of RNA because only the bases adenine in DNA and thymine in RNA will pair together when DNA acts as a template for constructing RNA

D- The nucleotide sequence of DNA determines the nucleotide sequence of RNA because only the bases guanine in DNA and cytosine in RNA will pair together when DNA acts as a template for constructing RNA

answer; ///i believe that the correct answer is (a) specialized cells)

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation: