There are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). This sequence is broken into a series of three-nucleotide units known as codons. Each DNA sequence that contains instructions to make a protein is known as a gene.
Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.
DNA sequencing was built upon earlier knowledge of DNA polymerases and cell-free systems for replicating DNA. The chain-termination method, which makes clever use of a "defective" DNA nucleotide, now dominates DNA sequencing technology.
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ANSWER: the organisms in the air, on land, and in the water
REASONING: A <u>biosphere</u> is defined as an ecological system that comprises of all living things, and their relationships and interactions with the living and non living things around them. The first three answers only considers certain parts of the system, and the correct answer considers all parts.
Answer:
When oxygen is scarce cellular pyruvic acid is converted to Lactic acid
Explanation:
In the absents of the oxygen, certain organisms such as yeast can convert pyruvate into carbon dioxide
The Advantages of Selective Breeding For Humans
1. Higher Yield of Goods
The main reason for selective breeding in the first place is to increase the amount of milk, meat, eggs, or fruits that are produced by the animal or plant. This has been successfully done many times and continues to be done today.
2. Most Nutrition Provided
Plants and animals can be bred to have more nutritional value. This is a great benefit because that nutrition is passed on to the consumers.
3. Breeds Out Harmful Traits
Any traits that are harmful to the species as a whole, or are unnecessary obstacles in the harvesting process can be successfully bred out of the animals.
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