genes, chromosomes, cell division and variation Flashcards

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1
Q

gene

A

length of dna which codes for a protein

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2
Q

dna

A

double helix shape
made of 4 building blocks called bases
adenine, cytosine, guanine, thymine

AT
CG

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3
Q

diploid

A

humans contain 2 copies of each of their 23 chromosomes

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4
Q

haploid

A

only contain one copy of each chromosome

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