Kalıtım materyali olarak DNA Flashcards

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1
Q

Genetic material must show 4 traits

A

Replication
Genetic information storage
Expressing stored genetic information
variation

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2
Q

What is griffiths experiment

A

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3
Q

Whatiç Avery, Macleod an Mccarry experiment

A

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4
Q

What is hershey and chase experiment

A

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5
Q

What did Erwin Chargaft and his colleagues du?

A

used hromatographic methods to separate four bases
revealed some common features of DNA

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6
Q

Chargaff Rules

A

Adenin= Thymine
cytosine- guanine
A+T/ C+G = ucries by species this ratio is different in different Organisms; but it is the same in different tissues of the some organisms
complementary base pairing
T+C =A+G

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7
Q

Rosalind Franklin

A

X_ray dffraction photograph of pure DNA strands in form B
showed that the molecule was helical

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8
Q

Watson and Crick

A

right handed double helix structure
the two chains are opposite each other
3.4Å between the bases
only A-T G-C pairing are possible
full turn of the helix is 34Å, 10 bases per turn
major grooves minor grooves
the diameter of the helix is 20Å

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