Genes and Proteins

Gene
A short section of a chromosome coding for one or more polypeptides or functional RNA
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Chromosome
Thread-like structure by which hereditary information is passed from one generation to the next
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What are the three main parts to a strand of DNA/RNA?
Phosphate group, (deoxy)ribose and nitrogen containing organic base
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Locus
Position of a gene along a chromosome
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What does a chromosome look like prior to division?
2 sister chromatids joined at the centromere
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Allele
One of a number of alternative forms of a gene
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Homologous chromosomes
Pair of chromosomes, one maternal and one paternal that have the same gene loci and therefore determine the same features
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How is the DNA different a Eukaryote compared to in a Prokaryote?
Eukaryote: long and linear, associated with histones so form chromosomes and is in a nucleus
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How many amino acids are there?
20
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Degenerate code
A number of different triplet codes can code for the same amino acid
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Universal
Each triplet codes for the same amino acid in all organisms
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Non-overlapping
Each base in the sequence is only read once
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Introns
Non-coding regions of gene
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Exons
Coding regions of gene
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Other cards in this set

Card 2

Front

Thread-like structure by which hereditary information is passed from one generation to the next

Back

Chromosome

Card 3

Front

Phosphate group, (deoxy)ribose and nitrogen containing organic base

Back

Preview of the back of card 3

Card 4

Front

Position of a gene along a chromosome

Back

Preview of the back of card 4

Card 5

Front

2 sister chromatids joined at the centromere

Back

Preview of the back of card 5
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