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Tanya [424]
3 years ago
7

1)Which of the following is a source of genetic variation

Biology
1 answer:
Svetllana [295]3 years ago
6 0

The answer is; B

Mutations change the order of nucleotide and therefore affects codons that code for proteins. A different protein is thus produced from the wild type hence creating variations.  Genetic shuffling in sexual reproduction, also called gene recombination occurs during meiosis and also when different organisms exchange genetic material such as in bacteria.  

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As a result of a failure of the twenty-first pair of chromosomes to separate during meiosis, aziz received three of these chromo
DochEvi [55]

Aziz has Down syndrome.

Down syndrome or trisomy 21 is a genetic disorder which results in physical growth delays and mild / moderate intellectual disability. Patients with this disorder have characteristic facial features and their IQ is usually equivalent to the mental ability of an 8 or 9-year-old child.


3 0
3 years ago
Why is over farming a threat to the health of humans?
soldi70 [24.7K]

Answer:

it removes too many nutrients from the soil.

Explanation:

7 0
2 years ago
Read 2 more answers
Which of the types of cells in T. adhaerens contain cilia (choose that all apply)
Rudik [331]

Answer:

B.fiber cells

Explanation:

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8 0
3 years ago
What might happen if smaller fish had to leave one area of the ocean because the temperature changed?
Vilka [71]

Answer: C

Explanation: Because the larger animals might starve if they don’t any smaller fishes to feed on unless they also leave the area or change there diet.

8 0
3 years ago
Because most cigar and pipe smokers do not ______, as a group they have a lower risk of cancer than cigarette smokers.
Artyom0805 [142]

Because most cigar and pipe smokers do not<u> </u><u>inhale the smoke</u> , as a group they have a lower risk of cancer than cigarette smokers.

The cigarettes, cigars, and pipe tobacco are made out of dried tobacco leaves. The other substances are usually added for flavor and to make smoking more gratifying. The smoke from these products is a complex mixture of chemicals produced by flaring tobacco and its additives.

There are at least 70 known chemicals to cause cancer. These cancer-causing chemicals are referred to as carcinogens.

It is so because cigars and pipes are usually believed to be less harmful way than to smoke tobacco. It was once a trend to use cigars in the 1990s, luring/dragging the young and the old.

Most of the people think cigars are less harmful to their health, but they actually pose the same risk for oral cancer as cigarettes do. Many cigar smokers don't inhale the smoke, but still the risk for oral, throat, and esophageal cancer is alike as for cigarette smokers.

To learn more about carcinogens here

brainly.com/question/984334

#SPJ4

5 0
1 year ago
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