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aleksley [76]
3 years ago
13

In Klinefelter syndrome males have chromosomes XXY. This is an example of:

Biology
1 answer:
Nookie1986 [14]3 years ago
8 0
This is an example of non-disjunction of sex chromosomes, The correct option among all the options that are given in the question is the first option or option "A". The other choices in the question are incorrect and can be neglected. I hope that this is the answer that has actually come to your desired help.
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Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat
icang [17]

DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

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

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

Each full turn of a helix is 34A and each base pair is 3.4A apart. The distance between two strands of DNA is 20A.

Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

3 0
3 years ago
Why is carbon so important for living things
Blizzard [7]

Answer:

Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.

Explanation:

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3 years ago
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How can sickle cell disease<br> sufferers inherit sickle cell?
aleksklad [387]

Answer:

hi!

Explanation:

If 2 parents are carrying sickle cell with them, if there child receives 1 different copy from each of the parents, they have sickle cell. but those  parent's who are carrying the sickle cell do not get it, they can only pass it down. So if a child gets a Sickle cell gene (S), and a sickle cell gene (A) they get sickle cell.

I hope this helped! If it didnt, ill fix my answer! just let me know!

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Explanation:

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My biology teacher said this question wrong. What did I mess up on?
wlad13 [49]
I think it’s the phenotypes
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