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3 years ago

Why would wearing sunscreen help prevent melanoma

Biology

2 answers:

maw [93]3 years ago

8 0

Answer:

Sunscreen reduces the level of UV radiation, which causes damage to DNA, and slows the development of melanoma

lesya692 [45]3 years ago

8 0

After applying sunscreen to the skin of the mice, the team found it significantly reduced the level of DNA damage caused by UV radiation, which slowed development of melanoma

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A severe vitamin b12 deficiency results in what form of anemia

steposvetlana [31]

pernicious form of anemia

8 0

3 years ago

HELP ME PLS ASAP IT’S ALREADY OVER DO I WILL GIVE BRAINLIST IF U ANSWER EVERY QUESTION YES they have to be real answers... NO No

Slav-nsk [51]

Answer:

the clouhaudram is a representation of repitles with diffren chamberd hearts.Also the clauhgrdram is showing what reptile are in the same catogory besides the bird and the crocidile.

tauratura because they where her ner the time of dinosauros and then came snakes tthen ome snakes adapted to diffrent envirment and grew legs

the least related is a lizard and a tura tuar because they cam last the lizard did

Explanation:

hope this help

8 0

3 years ago

Which surface exhibits the highest albedo measurement?

Lelu [443]

Albedo is the "whiteness" of a surface. It is a reflection coefficient, and has a value of less than one. The albedo of a surface is the ratio of radiation reflected from the surface to the incident radiation. Hope this helps. Have a nice day. Feel free to ask more questions.

3 0

3 years ago

In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue

Zolol [24]

Answer:

F1) 100% bbRr, red flowered plants.

Explanation:

Available data:

flowers may be yellow, blue, red, or mauve
colors may be true-breeding
the cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowers
F2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.

Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).

According to the first cross, we might establish the following genotypes:

1st Cross: blue-flowered plant x red-flowered plant

Parentals) BBrr x bbRR

Gametes) Br, Br, Br, Br bR, bR, bR, bR

F1) 100% BbRr, yellow plants

Parentals) BbRr x BbRr

Gametes) BR, Br, bR, br

BR, Br, bR, br

Punnett square) BR Br bR br

BR BBRR BBRr BbRR BbRr

Br BBRr BBrr BbRr Bbrr

bR BbRR BbRr bbRR bbRr

br BbRr Bbrr bbRr bbrr

F2) 9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR

3/16 blue ------> 1/16 BBrr + 2/16 Bbrr

3/16 red---------> 1/16 bbRR + 2/16 bbRr

1/16 mauve ----> 1/16 bbrr

So,

Yellow-flowered plants: BBRR, BBRr, BbRR, BbRr
Red-flowered plants: bbRR, bbRr
Blue-flowered plants: BBrr, Bbrr
Mauve-flowered plants: bbrr

According to these genotypes, the second cross would be like following,

2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.

Parentals) bbRR x bbrr

Phenotype) Red Mauve

Gametes) bR, bR, bR, bR br, br, br, br

Punnett square) bR bR bR bR

br bbRr bbRr bbRr bbRr

F1) 100% bbRr, red flowered plants.

6 0

3 years ago

What supports the external ear?

mezya [45]

Hard, dense bone tissue that is beneath the outer membrane of bone

5 0

3 years ago