Answer:
D. Use the polymerase chain reaction
Explanation:
Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.
The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
Answer:
The correct answer is option C, that is, 1.5.
Explanation:
As the population exhibits an equal ratio of males and females and the rate of mortality is zero, thus, assuming the following values:
N0 = 2, that is, population at present considering a solitary couple.
N1 = 3, that is, population at the end of one year comprising the offspring
Presuming that the population is demonstrating discrete exponential growth/geometric growth one can use the formula:
\lambda (finite/geometric rate of increase of a population) = \frac {N1} {N0}
\lambda = \frac {3}{2} = 1.5
Thus, the value of lambda for the given population is 1.5.
Glycolysis, the Krebs cycle, and electron transport.
Answer:
1 = A
2 = B
3 = B
Explanation:
1) Black holes occur when really big stars collapse on themselves. And, in order to get big, the star has to be an old one.
2) A black hole is something huge that swallows up everything, while a protostar is just the very beginning of a star.
3) Scientist can't truly know for sure, but they can infer about them due to the effects of the surrounding areas.
The question is unfortunately incomplete. The difference referred to here is that related to what s<span>cientists discovered between today's whales and the fossils of whales' ancient ancestors. The scientists discovered that the ancestors of whales had four legs and could walk on land. This commonality in body form between land animals and the ancestors of whales indicates a common ancestor. </span>