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loris [4]
3 years ago
14

Why do scientists need to run PCR in order to work with DNA?

Biology
2 answers:
prisoha [69]3 years ago
8 0
PCR multiplies the DNA in 25 to 75 cycles
Neko [114]3 years ago
6 0
This is the chain reaction in the name polymerase chain reaction. PCR is so efficient because it multiplies the DNA exponentially for each of the 25 to 75 cycles. A cycle takes only a minute or so and each new segment of DNA that is made can serve as a template for new ones.
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Pain receptors are free nerve endings that respond to tissue damage and display sensory adaptation true or false
ANEK [815]
False.

Pain receptors are free nerve endings- nociceptors- that are stimulated by the chemical released from damaged tissue.
These receptors alert us for possible danger but they don't display sensory adaptation. Sensory adaptation it's when the response to stimulus decreases even though the stimulus is the same, we just become unaware of it.
In pain sensations, that doesn't happen.
3 0
3 years ago
A wire-hair terrier and a smooth-hair terrier are mated. The offspring produced are 6 wire-hair puppies and 2 smooth-hair puppie
Leto [7]

Let’s assume a wire-hair terrier is a true breed for wire hair with alleles (BB) and a smooth-hair terrier is true breed for smooth hair (bb). Allele B is dominant over its allele b. When these two terrier mated and produce offspring wire-hair terrier and smooth-hair terrier in the ratio 3:1.

Based on this result it can be inferred that –

a. The pattern of inheritance is monohybrid cross.

b.Genotype of wire-hair terrier (1BB and 2 Bb) and genotype of smooth-hair terrier is (bb)

c. Phenotype ratio will be 3:1 and genotypic ratio will be 1:2:1.

7 0
3 years ago
Read 2 more answers
Explain the purpose and function of DNA polymerase.
sveticcg [70]

Answer:

Explanation:

The DNA polymerases are enzymes that create DNA molecules by assembling nucleotides, the building blocks of DNA. These enzymes are essential to DNA replication and usually work in pairs to create two identical DNA strands from one original DNA molecule

3 0
3 years ago
Which of the following phrases of development extends from the beginning of sexual maturity to independent adulthood?
-Dominant- [34]

Answer:

A. puberty because thats when u start to grow into teenage n an early stage of adult hood

8 0
3 years ago
(100 POINTS AND BRAINLYEST?? WOWWWW)
-BARSIC- [3]

Answer: the answer is really D:  because index fossils are of organisms that existed for a short period of time. When finding them in a rock layer, you can be certain that the rock layer was formed in that small-time frame.

Explanation: I took the quiz :)

4 0
3 years ago
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