Dna replication involves several steps. first, the enzyme, helicase, unwinds the hydrogen bonds of the dna double helix. then dna polymerase attaches the complementary nucleotides thereby creating two semi-conservative strand of identical dna. semi-conservative replication of dna refers to the idea that dna molecules need to unwind before duplication can begin. each new dna molecule contains two new single rna strands. the identical two strands of dna molecules run in opposite directions. two identical dna strands contain part old and now part new nucleotides.

Determine if the following statement is true or false. if true, choose true. if false, choose the rewording that is true. according to the law of independent assortment, alleles for each gene are inherited together so that they always stay together. according to the law of independent assortment, offspring express a combination of their parents' traits. according to the law of independent assortment, alleles for a characteristic split during meiosis and combine during fertilization. true according to the law of independent assortment, alleles for each gene are inherited independently so that no two alleles stay together.

Select all that apply genes are specific nucleotide sequences occur in numbers that are the same as the number of chromosomes are located in a specific place on a chromosome determine the traits of an organism are units of rna

Look at the photo of the leaf, which term best describes this leaf ? a-simple.b-parallel.c-lobed.d-tooth.