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Kay [80]
3 years ago
8

Design an experiment to determine whether lactase persistence in the different global hot spots was caused by one or several mut

ations
Biology
1 answer:
valkas [14]3 years ago
6 0

Answer:

Collect DNA from individuals who are lactase persistent and are from the global hot spot populations. Then look for genetic differences correlated with lactase persistence; the first place to look would be in and around the lactase gene. Compare the genetic differences to see if they are the same or different.

Explanation:

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Which of the following statements is NOT true about the
joja [24]

Answer:

A) Between nucleotides, the base A will bind to the base G, and the base T will bine to the base C.

Explanation:

bases A and T bind to together, while bases G and C bind together.

(according to studies)

This is why A is the correct answer.

Hope it helps!!(Also, please don't forget to add me as brainiest to support me)

6 0
2 years ago
For fertilization to occur in humans, only one sperm is needed to weaken the barrier that surrounds the egg.
photoshop1234 [79]

Answer:

False

Explanation:

Approximately 200 out of 200 million sperms ejaculated during intercourse reach the general vicinity of the egg.  They sperms must undergo capacitation during which dilute inhibitory factors fluids of the female reproductive tract weaken the membrane of the sperm head so that head of the sperm can be broken easily when it came in contact with the egg.

The first sperm to reach an egg isn’t the one to fertilize it because the egg is surrounded by a gelatinous membrane called the zona pellucida. Outside this layer, a layer of small granulosa cells also present.

Therefore, it requires numerous sperm to clear a path through these barriers before one of them can penetrate the egg and fertilize it.

8 0
3 years ago
Atom A has an atomic number of 19 and mass number of 40. Atom B has an atomic number of 20 and a mass number of 40. Which of the
Lostsunrise [7]
<span>The Correct answer is not shown. The correct answer would have to say Atom A has one proton than Atom B because in the question it says Atom A has an atomic number of 19 and Atom B has an atomic number of 20.</span>
5 0
3 years ago
An animal virus enters its host cell by
stealth61 [152]
I would say <span>C. being injected into the cell is the right answer</span>
4 0
3 years ago
in which location is water most likely to be transferred the fastest from the hydrosphere to the atmosphere?
Archy [21]
Probably smaller bodies of water, as less water will heat up and evaporate faster.
4 0
3 years ago
Read 2 more answers
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