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gregori [183]
3 years ago
8

What is produced by the process of meiosis?

Biology
2 answers:
kotegsom [21]3 years ago
4 0

Answer:

Four haploid daughter cells.

Explanation:

Meiosis is a type of cell division, which takes place in sex cells (or gamete forming cells) during gametogenesis. It leads to formation of four daughter cells from a single parent cell, having half of the genetic material as present in parent cell.

For example, one mother egg cell (having 46 chromosomes) produces four egg cells (having 23 chromosomes) through meiotic division.

Thus, the correct answer is 'four haploid daughter cells.'

alex41 [277]3 years ago
3 0
Meiosis is the process of cell division that produces eggs and sperm for sexual reproduction. <span />
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Sternal angle marks the joint between the sternum and the 2nd rib.

Option E.

<h3><u>Explanation:</u></h3>

Sternum is the breast bone which is a dorsi ventrally flattened bone present in thorax of human. It gives the support for the ribs where the ribs join. A sternum has three parts - Manubrium sterni, body of sternum and the xyphoid process.

The sternum has attachments of a total of 10 ribs and clavicle. The clavicle and the first rib joins in the Manubrium sterni, and the 3rd to 10th rib joins in the body of sternum. The 2nd rib joins in a facet which is partly in Manubrium sterni and partly in body of sternum. This place id also called the sternal angle. So the sternal angle marks the joint of 2nd rib to sternum.

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2 years ago
A) Identify and describe the four levels of protein structure.
fgiga [73]
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2. Secondary Structure: refers to the coiling or folding of a polypeptide chain that gives the protein its 3-D shape. There are two types of secondary structures observed in proteins. One type is the alpha (α) helix structure. This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. The second type of secondary structure in proteins is the beta (β) pleated sheet. This structure appears to be folded or pleated and is held together by hydrogen bonding between polypeptide units of the folded chain that lie adjacent to one another

3. Tertiary Structure: refers to the comprehensive 3-D structure of the polypeptide chain of a protein.

4. Quaternary Structure: is the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. Each polypeptide chain is referred to as a subunit. Proteins with quaternary structure may consist of more than one of the same type of protein subunit.
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3 years ago
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8 0
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If 30% of the bases in human DNA are A, (a) what percentage are C? (b) What percentage are T? (c) What percentage are
galina1969 [7]

Answer:

DNA is present as genetic material in all the living organism except some virus. DNA structure follows the Chargaff's rule in which states that the ratio of pyrimidines to purines is equal to 1.

So, amount of adenine will be equal to thymine. If adenine is 30% then thymine is also 30%. Total amount of DNA is 100%. Cytosine and thymine are also equal in the DNA molecule. The total amount of cytosine and guanine is 40%. The amount of cytosine is 20% and the amount of guanine is also 20%.

Thus, thymine is 30%, cytosine is 20% and guanine is 20%.

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3 years ago
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