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2 years ago

Compare the structures for genetics with every day objects. Must include the words: genes, DNA, chromosomes, and nucleus.

Biology

1 answer:

alekssr [168]2 years ago

7 0

Answer:

Genes play an important role in determining physical traits — how we look —and lots of other stuff about us. They carry information that makes you who you are and what you look like: curly or straight hair, long or short legs, even how you might smile or laugh. Many of these things are passed from one generation to the next in a family by genes. Most cells have one nucleus. The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell. It tells every part of the cell what to do. It contains our chromosomes and genes. Chromosomes come in matching sets of pairs and there are hundreds (sometimes thousands) of genes in just one chromosome. The chromosomes and genes are made of DNA.

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The presence of variation in the size and shape of bacterial cells of the same species is known as _______.

Leno4ka [110]

Answer:

Correct answer is a pleomorphism

Explanation:

Some bacteria have the ability to change their shape and size which is called pleomorphism. The bacteria which change their shape and size are called pleomorphic bacteria.

These bacteria change their shape due to the change in the external environment condition. For example, bacteria can from rod to coccus shape as their environmental condition changes.

Some examples of pleomorphic bacteria are mycoplasma, some members of the Deinococcaceae family, helicobacter pylori, etc. So the correct answer is a.

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3 years ago

In a dichotomous classification system, __________.

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Read 2 more answers

quizlet chromosomes are composed of: please choose the correct answer from the following choices, and then select the submit ans

Anna11 [10]

Chromosomes are composed of deoxyribonucleic acid (DNA) mole

There are mainly two molecules that function as genetic material in living organisms.

These are ribonucleic acid(RNA) and deoxyribonucleic acid(DNA).

The organisms having DNA as genetic material require packaging of DNA as it is a long polymer of deoxyribonucleotides.

In the case of human beings, the length of DNA in a cell is approximately 2.2 meters which is very large as compared to the size of the nucleus( approximately 10^-6 meters).

So, the DNA has to be made compact for it to be present inside the nucleus of a cell.

Therefore, the DNA present inside the nucleus of a cell undergoes coiling and compaction through several stages before finally becoming a chromosome, which is shown in the adjoining diagram.

Thus, chromosomes are composed of deoxyribonucleic acid (DNA) molecules.

To know more about "DNA Packaging", refer to the following link:

brainly.com/question/14702559?referrer=searchResults

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1 year ago