Because for the strands to form a double helix the base pairs have to match perfectly (adenine with thymine and cytosine with guanine) in DNA , and if a strand of RNA is paired with a split strand of DNA it goes adenine with uracil and cytosine with guanine (uracil replaces thymine)
Has something to do with science
<span>Ok here is what I know that happens. It is said that our cells are like a big building that has the planes for its own construction in the wardrobe of any room, this is the cell core, in this planes there are the instructions for anything, for eating, for breathing, for reproducing and for dying. A hormone arribes to the cell membrane, this hormone is the messager, it carries some instruction for the cell, the cell then starts consulting its dna looking for the specific part of that instruction, when it find it it copy the specific part to another molecule, the RNA (messager rna), this rna goes to the ribosome, where it copy again to another rna molecule (rna trascription) the ribosome starts to read the rna and to produce the specific aminoacids that are codified, this aminoacids are then assembled to form proteins, this proteins are then assembled to form bigger structures.</span>
Answer:
10 (agouti) : 3 (black) : 3 (white)
Explanation:
Genotype AaBb can produce gametes AB, Ab, aB, ab.
The cross between Aa Bb × Aa Bb:
The phenotype ratio is 10 (agouti) : 3 (black) : 3 (white)
Genotypes for the agouti phenotype are: AABB, AABb, AaBB, AaBb
Genotypes for the black phenotype are: AAbb and Aabb
Genotypes for the white phenotype are: aaBB, aaBb and aabb
