The quiz with only DNA things.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is DNA? | --It carries the genetic code for living organisms
--It carries codes for traits
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| Shape of DNA | It is called a DOUBLE HELIX or A twisted ladder
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| What is DNA made up of? | --DNA is made up of nucleotides.
A nucleotide consists of a sugar, phosphate and a base
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| Structure of DNA | The sides of DNA are made of alternating sugar and
phosphate.
--The steps of DNA are made of nitrogenous bases
A, T, G, C
--The bases are always in matching pairs
A = T
G = C
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| Where you can find DNA? | Cell - Nucleus - Chromosomes - DNA
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| Rosalind Franklin | She used x-ray pictures to discover the structure of DNA
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| James Watson and Francis Crick | Made the first 3-Dimensional model of DNA
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| Gregor Mendel (Father of Genetics) | *He studied pea plants.
*He used them to see how traits were passed
down from one generation to the next
(Inheritance Patterns).
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| Chromosomes | --Contain DNA
--Humans have 46 chromosomes in
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| Alleles | different forms of a gene
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| Example of alleles | If gene - fur color, alleles - Black, Blonde, Chocolate
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| Inherited Traits | Examples: natural eye color
Hair color
Freckles
Widow’s peak
Hitchhiker thumb
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| Acquired Traits | A learned trait or something that happens to you.
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| Genetic Engineering | Adding genes to an organism to improve that organism.
Examples:
--adding genes to potatoes to produce a vaccine
for chloera
--adding genes to oranges so they can survive
freezing temperatures
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| Punnett squares | -A chart used to find the probability of a trait being passed down a generation.
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| Phenotype | Physical appearance (what you see)
Examples: Blue eyes, curly hair, black fur
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| Genotype | -Genes, represented by alleles
Examples: AA, Aa, aa
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| Heterozygous | -different alleles, Aa
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| Homozygous | -same alleles, AA aa
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| What structure do you find DNA on? | Chromosomes
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| Which part of the picture carries the code for a trait? | A little section of DNA
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| What bases match up in a DNA molecule? | A - T
G - C
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| Which of the following traits rely completely on genetics? | Height
Hitchhiker thumb
Freckles
Suntan
Intelligence
(2, 3)
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| Chocolate, Vanilla and Coffee are different flavors of ice cream like alleles are different types of genes | nothing
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| What part of DNA carries the chemical code? | The nitrogen bases, AT and GC.
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