Question

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$\huge\underline\mathcal\pink{QueStion}$ Explain Watson and Crick Model of DNA..!!?​

Answer 1

Waston and Crick model of DNA

DNA is a long polymer of deoxyribonucleotides.

↪The DNA present in the mitochondria

mitochondrial DNA.

↪The length of DNA is also the characteristic of an organism

In 1953 James Watson and Francis Crick proposed a

Double Helix

model for the structure of DNA.

According to Watson and Crick model of DNA

1. The Double Helix consists of two polynucleotide chains, which are coiled like a helix .

2. The two change have antiparallel polarity .it means, if one chain has polarity 5' ⇨ 3',

The other has 3' ⇨ 5' .

3. the backbone is considered by sugar phosphate.

4. adenine(A) always pairs with thymine(T ) and

Guanine(G ) pairs with cytosine(C) . A and T are joined by two hydrogen bonds, while the G and C have three H - bonds .

5. the pitch of The helix 3.4nm, and roughly 10 bp in each turn.

6.The nitrogen bases lie perpendicular to this

backbone but face inside.

7. There are ten base pairs in a complete turn which has ten steps. 

8. A base pair represents each step of ascent of the spiral. At each step the strand turns 36

degree.

• Francis Crick proposed Central dogma in the molecular biology which states that the genetic information flows from;

DNA ⇨RNA ⇨Protein

Answer 2

$\huge\star\underline\mathfrak\red{Answer:-}$

In 1953, scientists Francis Crick and James Watson developed what we call the Watson and Crick model of DNA, which supposes that DNA exists in a double-helical twisted ladder structure of phosphate chains with matching nucleotides. Their model has become how we view DNA, the blueprint of all life, ever since.