Answer:
B. It is the kind of evolution that can change the relative abundance of a particular allele in a gene pool over the course of generations.
Explanation:
Microevolution small changes in allele frequency in a population.<em> Its effects can be seen in short periods, even from one generation to the next one generation, when these microevolution changes accumulate they can lead to macroevolution.</em>
The processes that result in microevolution are
- Gene Flow: Is the transfer of variations of a gene from one population to another, generally of the same species.
- Mutation: A random alteration of a gene, occurs rarely and it's the source of new alleles. They can benefit or be harmful.
- Genetic drift: <em>Its the random possibility of an allele to become less or more numerous in a population</em>, this can lead to the fixation or loss of this allele.
- Selection: It depends on the adaptative advantage of certain traits
I hope you find this information useful and interesting! Good luck!
Answer:
Transcription factors
Explanation:
They are part of the cell's core transcription toolkit, needed for the transcription of any gene. RNA polymerase binds to a promoter with help from a set of proteins called general transcription factors.
Answer:
to add nucleotides to a DNA primer
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology in order to amplify small segments of DNA (100 to 1000 bases). PCR uses a thermostable DNA Taq polymerase that adds nucleotides to the DNA template at the position specified by short single-stranded DNA primers that bind to this template by complementary base pairing during the annealing phase of the PCR cycle. Subsequently, the DNA polymerase adds deoxynucleotide triphosphates (dNTPs) to the opposite DNA strand, this phase of the PCR cycle is known as the elongation phase. Finally, the resulting double-stranded DNA fragment is separated by heat during the denaturation step and this 3-step PCR cycle is repeated many times to amplify the target DNA region.
They are all part of the digestive system, they all break down food, they all have enzymes
The answer is B. Hope this helps you!
-Belle
