Im pretty sure its 20,000-25,000
Answer:
Because of how genes change and how quickly they change, evolution is complicated. At the start of evolution, there shouldn't be a straight tree branch—it should be a twisted mess.
Answer:
An example that is not mentioned would be when plants give off oxygen because oxygen is vital to keep living things that require it, alive.
Explanation:
Answer:
the answer is 3.2 x 10⁴
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology to exponentially amplify a specific DNA sample from a small amount of DNA. For this purpose, the PCR technique uses: 1- a DNA polymerase enzyme in order to synthesize new DNA copies and 2- one pair of DNA oligonucleotides (primers) which are complementary to the ends of the target DNA sequence. During each round of PCR, the double-stranded DNA template is unwound and each strand is used to synthesize a new DNA strand, thereby forming two new double-stranded DNA molecules. In consequence, each round of PCR doubles the amount of DNA.
Answer:
Mechanical digestion
Chemical digestion
Explanation:
Food is physically broken into smaller parts. For instance, by chewing.
Food is broken down by acids and enzymes into its basic units.
