Answer:
The development by scientists of a new color in a rose is the result of genetic modification
Explanation:
The development of new colors in the species of roses is given by the genetic modification by means of the introduction of genes of other species that express other colors absent naturally in the roses. The genes that are inserted are those that encode pigmentation for a certain color.
Number one is D
Number 2 is b im pretty sure
Answer:
increasing extension time
Explanation:
The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.
dna, genes, animo, to acids
