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3 years ago

What does dna contain

Biology

2 answers:

Degger [83]3 years ago

3 0

Answer:

cinecesti

Explanation:

bulgar [2K]3 years ago

3 0

Answer:

DNA strands are polymer. This means they are made up of lots of different repeating units. Each "unit" contain one to four bases. The bases are known as: C (cytosine), A ( adenine), G ( guanine, T ( thymine). The DNA has two strands coiled up together in a shape of double helix ( a double strand spiral) . Each bases links to the opposite strand in the helix. A always links with T and C always links to G. This is called complementary base pairing. The complementary base pairs are joined together by weak hydrogen bonds.

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serg [7]

Ok so if the circle is the female than her thing would be C. If the square is the female it would be D! I hope this helps!

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3 years ago

3. What is crossing over? When does it occur during meiosis? Why did you have difficulty modeling this element of meiosis using

FrozenT [24]

Crossing over happens in Meiosis 1 only. In Prophase 1 a cells chromatin (chromatin = chromosomes that have not condensed yet) condense and pair up forming homologous chromosomes (paired = XX (2 chromosomes together)). When this happens segments/ alleles of the chromosomes pairing up swap over. This creates genetic diversity as each chromosome is different, it has parts from its pair. This leaves every chromosome unique and individual.

I hope this helps, sorry some of the vocab is rather technical. By the way I would suggest watching the 'Crash Course: Meiosis' on YouTube, this really helped me when I was learning this topic. :D

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3 years ago

Read 2 more answers

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Aneli [31]

Answer:

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Explanation:

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3 years ago

The easiest type of business to start is a sole proprietorship

klio [65]

Answer:

There is no correct answer.

Explanation:

Different circumstances regarding how you operate your company and what kind it is.

Also, with sole proprietorships, it may be hard to manage liabilities, as the owner is <em>personally</em><em> </em>responsible for any liabilities. It is also hard to procure funding for your company.

However, it is simple to incorporate and allows for high flexibility, which may be what you mean by "easiest type ... to start".

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2 years ago

Which of the following is an example of the endocrine system maintaining homeostasis?

bekas [8.4K]

Answer:

The correct answer is "C".

Homeostasis is the maintaining of stable internal conditions in the body of a living being, such as body temperature or heart rate.

The endocrine system is an organ in the body which is in charge of secreting hormones that regulate numerous functions in the body, including metabolism, growth, sexual function, sleep, and mood among others. It is an essential organ which contributes to the state of homeostasis in the body.

Explanation:

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2 years ago