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What are the differences between RNA and DNA? - correct answer- 1. The sugar in RNA is
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ribose instead of deoxyribose
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2. RNA is single-stranded, DNA is double-stranded
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3. RNA contains uracil (U) in place of thymine (T)
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How do the bases pair in a DNA strand? - correct answer- A-T, C-G
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What is a mutation? What can cause a mutation? - correct answer- Any change in
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nucleotide sequence of DNA, caused by errors in DNA replication or physical or chemical
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agents called mutagens
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What are four nucleotide bases for RNA and DNA? - correct answer- DNA- Thymine (T),
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cytosine (C), adenine (A), and guanine (G)
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RNA-Uracil (U) instead of T b b b b
What is the full name for DNA? RNA? - correct answer- DNA- DeoxyriboNucleicAcid
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RNA- RiboNucleicAcid
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Where are the sugar, phosphates, and nucleotides located on the double helix? - correct
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answer- Sugars and phosphates form the backbone of the double helix, nucleotides attach
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in pairs to form the "rungs of the ladder"
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How can a mutation be good, bad or cause no obvious difference? - correct answer-
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Mutations can be harmful, or helpful for diversity and evolution. Depends on type of change,
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where the change occurs, if the change is fixed before replication, and/or how it affects the
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organism and its survival
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, Who won the Nobel prize for the structure of DNA? - correct answer- Watson, Crick, and
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Wilkins ( Franklin died of cancer in 1958, before she could win the prize).
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What is replication? - correct answer- When a cell or whole organism reproduces, a
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complete set of genetic instructions must pass from one generation to the next.
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Begins at specific sites on a double helix and proceeds in both directions
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What is transcription? - correct answer- Synthesis of proteins DNA--> RNA
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What is translation? - correct answer- Synthesis of proteins RNA--> proteins
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Where does replication, transcription and translation take place? - correct answer-
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Replication occurs in specific sites on the double helix (DNA)
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Transcription occurs in the nucleus b b b b
Translation occurs in the cytoplasm on the ribosomes b b b b b b b
How can a mutation in the DNA result in a protein not functioning correctly? - correct answer-
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Base substitution, nucleotide detection, nucleotide insertion
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What is a mutagen? What are some examples? - correct answer- A mutagen is something
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that causes a genetic mutation by making a change in the nucleotide sequence of DNA.
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Examples are UV light
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What is a gene? - correct answer- A unit of heredity that is transferred from a parent to
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offspring and is held to determine some characteristic of the offspring
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What are homologous chromosomes? - correct answer- Chromosomes that carry alleles of
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the same gene, have genes are specific loci, and have alleles of a gene at the same locus
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What is a zygote? - correct answer- A fertilized egg
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Who is Gregor Mendel? - correct answer- First person to analyze patterns of inheiritance,
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and deducted the fundamental principles of genetics
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Why did he use the garden pea? - correct answer- The plants are easily manipulated and
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can self-fertilize
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What is an allele? - correct answer- An allele is an alternative form of a gene (one member of
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a pair) that is located at a specific position on a specific chromosome.
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What does dominant mean? - correct answer- Determines the organism's appearance
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What does recessive mean? - correct answer- Has no effect on the organism's appearance
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What does homozygous mean? - correct answer- When an organism has identical (same)
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alleles for a gene (AA or bb)
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