A) Each DNA nucleotide is made up of a sugar, a phosphate group ... Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are ... In the case of RNA, the five-carbon sugar is ribose. DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix. Base-pairing takes place between a purine and pyrimidine: namely, A pairs with T, and G pairs with C. In other words, adenine and thymine are complementary base pairs, and cytosine and guanine are also complementary base pairs. This is the basis for Chargaff’s rule; because of their complementarity, there is as much adenine as thymine in a DNA molecule and as much guanine as cytosine. Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are connected by three hydrogen bonds. The two strands are anti-parallel in nature; that is, one strand will have the 3′ carbon of the sugar in the “upward” position, whereas the other strand will have the 5′ carbon in the upward position. The diameter of the DNA double helix is uniform throughout because a purine (two rings) always pairs with a pyrimidine (one ring) and their combined lengths are always equal.
<span>The daughter producing sperm used to fertilize Brittany's eggs should be haploid sperm cells. These cells contain one set of chromosomes. The work haploid also refers to the amount of chromosomes in sperm or an egg cell, sometimes called gametes. In human beings, gametes are generally haploid cells that have 23 chromosomes which each has one chromosome pair that can be found in diplod cells.</span>
Answer: B) the temperature of the water
Explanation: The independent variable is the one that is manipulated or changed
B. Abiotic
Explanation:
The role of flowing water in this ecosystem is abiotic.
- Abiotic factors in an ecosystem are the non-living factors that shapes an ecosystem.
- An ecosystem is made up of both living and non-living components.
- The action of running water is termed erosion and it shapes the land form as seen in the badland.
- This is an action not related to life and living organisms.
- It is an abiotic factor.
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Abiotic factors brainly.com/question/1542938
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I would answer but you didn't put any pictures so I can't see what shows anything.
