Noah developed a model to show how genes are acquired by offspring in sexual reproduction: He used two paper bags, one to represent each parent.
He placed two slips of paper representing alleles into each paper bag.
To show the transmission of alleles, he selected one of the paper bags, and took both slips of paper from that bag to represent the alleles passed to the offspring.

Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.