molecular basis of inheritance Flashcards by vijay ragav

Q

o/ *174 baceriophage

A

5386 nucleotides

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Q

lamda

A

48502 nucleotides

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Q

e coli

A

4.6*10^6 bp

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Q

haploid content of human dna

A

3.3*10^9bp

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Q

dna first identified by

A

friedrich meicher in 1869

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Q

double helix model for dna helix

A

watson and crick model 1953

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Q

pitch of helix

A

3.4nm

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Q

distance b/w basepair

A

.34nm

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Q

central dogma

A

fransis crick

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Q

length of dna

A

2.2m

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Q

transforming principle

A

1928,fredrick griffth

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Q

alfred hersey,maratha chase

A

1952 dna

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Q

replication

A

watson and crick 1953

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Q

measelson and stal

A

1958

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Q

Thymine

A

5 meyhyl uracil

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Q

Xray diffraction data

A

Maurice wilikin rosalind franklin

Q

Base pairs are formed by

A

HHbond

Q

Length of dna=

A

No. Ofbase pairs×pitch length

Q

A typical nucleosome has

A

200bp of bna helix

Q

Beads on string structure is viewed under

A

Em

Q

Cheonatin fibres are further coiled and condensed at.. .. Stage to form chromosome

A

Metaphase stage

Q

Euchromatin

A

Loosely packed

Q

,…….. Transcriptionally active

A

Euchtomatin

Q

Hershey and maratha chase experiment used

A

Radioactive p and s

Order of h andc experiement

Infection___blending ____centrifugation

Rna is gnetic materials in

Tobacco mossaic virus, qb virus

_____makes rna degrade and liable

2'oh group in second position

_____provides addition stability to bna

Thymine in place of uracil

Rna important

Splicing metabolism translation

Measlaon and atahl experiment used ____medium

N15 heavy isotopes of nitrogen

Distinguishion of heavy from normal by

Centrifugation in cscl density gradient

Dividing time of ecoli

20min

Taylor used...... To detect dnaneww

Radioactive thymidine

3'----5'

Template

Cistron

Segment of dna coding for polypeptide

Regulatory sequence of structural gene

Intron

rRna plays

Structural and catalytical role during translation