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Genetics Test

genetics-test

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The thinking was that a large number of monomers --

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have more variety in

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and proteins all around could hold more information in more complex molecules.

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What Hershey & Chase were trying to determine

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True or false: nucleic acid/DNA is not genetic material.

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Match letters with answers according to the diagram.

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thymine
adenine
cytosine
guanine

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guanine
cytosine
adenine
thymine

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A Codon table is

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Match the first and second half of the sentences

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Two sets of high-resolution photos of crystallized DNA fibers
She deduced that the basic dimensions of DNA strands
The Chargraff rules state that DNA from any cell of all organisms
Chargraff found that in natural DNA the number of guanine units

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in natural DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units.
using two different fibers it showed that one was more highly hydrated than the other
should have a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine.
had the phosphates on the outside of the helix structure

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Parent strand
Parent
Daughter strand

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DNA replication sequence

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Two daugher DNA molecules form, each containing new chain.
An enzyme breaks the bonds between the two polynucleotide chains of the parent molecule
The parent DNA molecules consists of two polynucleoutide chanis held together by bonds between complementrary nitrogen bases
another enzyme pairs new, complementary nucleotides with those oin the two parent chaina

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Explain and sketch how DNA replicates before a cell splits in two

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Preparation phase before mitosis the cell grows by making more protein
The end result is two identical strands
Second set of enzymes join nucleotides to each strand
Nucleotides match up by base pairing rule (C-G, A-T)
Cell copies DNA using one set of enzymes to split strands
Cell makes copy of organelles and checks DNA for errors

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Match DNA and RNA properties

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DNA
DNA
RNA
RNA

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has four nitrogenous bases: adenine, guanine, cytosine, and uracil.
is a polymer with a rebose and phosphate backbone
is a long polymer with deoxyriboses and phyosphate backbone
has four nitrogenous bases: adenine, guanine, cytosin and thymine

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Difference between DNA and RNA

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DNA
RNA

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can never leave the nucleus
is free to leave the nucleus

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What is a mutation

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Mutation changes of nucleotide level influence the transcription and translation from gene to protein expression

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