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harkovskaia [24]
3 years ago
13

What does polymerase chain reaction (PCR) do?

Biology
1 answer:
sineoko [7]3 years ago
8 0

Answer:

A. makes more copies of a sample of DNA

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What type of cell makes bone tissues
zvonat [6]

Answer:

A balance between Osteoblasts and osteoclasts maintain bone tissue.

Explanation:

Osteoblasts are bone making cells, osteoclasts resorb or break down bone, and osteocytes are mature bone cells.

7 0
3 years ago
The drug colchicine inhibits the formation of spindle fibers during mitosis if you treat diving plant cells with colchicine what
Shtirlitz [24]

Answer:

Chromosomes would divide in interphase and enter mitosis. However, the spindle apparatus would not form, so the chromosomes would end up in the metaphase form and no further mitotic events would take place.

Explanation:

3 0
3 years ago
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9. What is the base-pair rule for RNA?
4vir4ik [10]

Answer: The base pair rule for RNA is that adenine pairs with uracil, thymine pairs with adenine and cytosine pairs with guanine.

Explanation: RNA contains adenine, uracil, cytosine and guanine while DNA contains adenine, thymine, cytosine and guanine. Thymine is not found in RNA while uracil is not found in DNA. In RNA base pairing, Watson and Crick proposed a rule that wherever adenine is found in DNA, Uracil occurs in the complementary RNA strand, wherever thymine is found in the DNA strand, adenine is found in the complementary RNA strand and wherever guanine occurs in the DNA strand, cytosine is found in the complementary RNA strand.

5 0
3 years ago
Why is Carbon dioxide go to ur lungs? is this safe?
11111nata11111 [884]
Carbon dioxide is not safe for your lungs because once it reaches your lungs it will stop your breathing and you could die.
4 0
3 years ago
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Does female sperm and male sperm look different
nikdorinn [45]

Answer:

the Y chromosome is smaller than the X chromosome.

Explanation:

The male has an X and Y sex chromosome which is an exception to the general rule that homologous chromosomes are identical as the Y chromosome is smaller thus enabling it to swim faster than the X chromosome. The Y chromosome also has a longer lifespan compared to the X chromosome. The male genotypes is XY. Males are heterogametic as they produce two types of gametes, one carrying the X and the other carrying a Y chromosome.

7 0
3 years ago
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