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TEA [102]
2 years ago
14

Who disproved the concept that the deep sea is simply a dark and lifeless abyss?

Biology
2 answers:
Dahasolnce [82]2 years ago
8 0
Its none of them The person who actually disporved it was Charles Wyville Thompson
Ratling [72]2 years ago
8 0

The concept that the deep sea is simply a dark and lifeless abyss was proposed in the Azoic hypothesis by Edward Forbes. Forbes found that with depth the abundance of the marine life forms decreased and ceased to exist after 550 m. Michael Sars, a professor of Zoology found life at a depth greater than the hypothesised depth of 550 m. Later by the use of pioneering underwater technologies of Jacques Cousteau, several life forms were observed and this lead to the eventual disapproval of the Azoic hypothesis.

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Which of these statements correctly explains the difference between an atoll and a lagoon?
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Explanation:

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The barley plant has seven pairs of chromosomes. For a gamete, the number of genetic combinations that are possible through inde
umka2103 [35]

1) The correct answer is: 128 combinations.

The genetic combinations that are possible through independent assortment can be calculated as 2^n; where n is the number of different chromosomes.  

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2) For a zygote produced by two barley parents, the number of possible genetic combinations can be calculated as: 2^n * 2^n

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What is the significance of understanding changes to the information stored in DNA?
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Answer:

DNA is essentially a storage molecule. It contains all of the instructions a cell needs to sustain itself. These instructions are found within genes, which are sections of DNA made up of specific sequences of nucleotides. In order to be implemented, the instructions contained within genes must be expressed, or copied into a form that can be used by cells to produce the proteins needed to support life.

The instructions stored within DNA are read and processed by a cell in two steps: transcription and translation. Each of these steps is a separate biochemical process involving multiple molecules. During transcription, a portion of the cell's DNA serves as a template for creation of an RNA molecule. (RNA, or ribonucleic acid, is chemically similar to DNA, except for three main differences described later on in this concept page.) In some cases, the newly created RNA molecule is itself a finished product, and it serves an important function within the cell. In other cases, the RNA molecule carries messages from the DNA to other parts of the cell for processing. Most often, this information is used to manufacture proteins. The specific type of RNA that carries the information stored in DNA to other areas of the cell is called messenger RNA, or mRNA

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