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Topic 6: Genetics

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Humans have how many chromosomes?
46
What does Homologous mean?
Chromosomes with the same size, shape, and genes
What are Chromosome pairs?
Carries genes for the same trait
What is a codon?
It is a sequence of three bases in DNA
RNA carries the genetic code to...
Ribisomes
What is the shape of a DNA molecule?
Double heliax
What is a mutation?
A change in the genetic material of an organism
What does selective breeding mean?
Breeding organisms to produce offspring with desired traits
What are restriction enzymes?
They are used to cut the DNA sequence
What is a Karyotype?
A photograph of an organisms chromosomes
What does a Karyotype show?
It shows all 23 pairs of human chromosomes
What does the last chromosome tell you?
If it is a male or female