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adoni [48]
3 years ago
15

76. What is a restriction enzyme?

Biology
1 answer:
vlabodo [156]3 years ago
7 0

Answer:

an enzyme produced chiefly by certain bacteria, having the property of cleaving DNA molecules at or near a specific sequence of bases.

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A small number of finches live in a protected bird sanctuary. Natural selection
Vlad [161]

Answer:

Natural selection  is least likely to occur in this population if:

  • The resources are continuously available

For a species to survive in an area, it is essential that the place has enough resources like nutrients, space, water etc. If these resources are available then there will be less chances of competition which will lead to lesser chances of natural selection.

  • The number of of death rates is equal to the number of of birth rates

In an balanced ecosystem, the number of birth rates is equal to the number of death rates for a population. If the number of death rates is lesser to the number of birth rates then the competition for resources will lead to natural selection.

7 0
3 years ago
A square jaw is recessive to a round jaw (dominant), It is possible for two parents with a square jaw to have a child with a rou
sukhopar [10]
No, it would not be possible since both alleles in the genotype are recessive. If the alleles were xx for square jaws, then
x x
x xx xx

x xx xx

would be the possible genotypes for the offspring
6 0
3 years ago
How many times longer is DNA than it is wide?
egoroff_w [7]

Answer:

About 200 km 7.

8 0
2 years ago
The cuticle, cortex, and medulla are regions of the hair, can you describe how they are arranged?
Andrei [34K]

Answer:

The cuticle is the hair's protective layer, the cortex forms the pigment of the hair, the health of the cortex depends on the cuticle protecting it while the medulla is the innermost of the hair.

Explanation:

The cuticle is the hair outermost layer, the cortex is the middle structure for strength while medulla is the inner most.

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