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AysviL [449]
3 years ago
15

QUESTION 9

Biology
1 answer:
zhannawk [14.2K]3 years ago
8 0
A quadrant streak is the answer
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Charles Darwin, is the scientist is the father of evolution
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DNA<br>"Deoxyribonucleic<br>Acid"​
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Answer:

Details about DNA are given in the explanation section. Hope it will be helpful for you.

Explanation:

DNA, or deoxyribonucleic acid, is the hereditary element in humans and almost all other organisms. Nearly every cell in a person’s body has the same type of DNA. Most DNA is found in the cell nucleus (nuclear DNA), but a small quantity of DNA can also be found in the mitochondria (mitochondrial DNA or mtDNA).

The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same type in all people.

DNA bases pair up with each other, A with T and C with G, to form units that are called base pairs. Each base is also attached to a sugar molecule and a phosphate molecule.  A base, sugar, and phosphate are called a nucleotide. Nucleotides are arranged in two long strands that form a spiral called a double helix.

A valuable feature of DNA is that it can replicate, or make copies of itself. Each strand of DNA in the double helix can serve as a pattern for duplicating the sequence of bases.

7 0
4 years ago
Que es la evolución ?
Jet001 [13]

Explanation:

Evolution involves changing the hereditary characteristics of a population through generations. These traits are the expression of genes that are passed on to offspring during reproduction.

7 0
3 years ago
Is xylem a internal and external adaptation?
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External adaption because it doesn’t adapt patterns
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Over a period of 41,000 years, Earth’s axis spends a small portion of that time tilted at 0 degrees.
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