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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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smnam smnam
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11 years ago
So far i know that dna is stored in chromosomes, but do all 23 pairs of chromosomes carry different dna or do all chromosomes together form one dna. And is a gene a specific portion of dna?(like a slice of dna). and where does allele seem to be on the dna? can anyone give me some insight into it?
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#1
11 years ago
Each pair of chromosome carries a different set of DNA.  A gene is, you could say, a specific portion of DNA--it's a set of alleles, or base pairs, that codes for a specific piece of information (i.e., eye color).  Each chromosome has lots of alleles: an allele is one base pair (or nucleotide base, like an A or a C) on a strand of DNA.  Here's the way I think of it, like a flow chart: alleles->genes->DNA->chromosomes.  Alleles make up genes, which make up DNA, which makes up chromosomes.  Hope that helps!
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#2
11 years ago
allele -  one of two more forms a gene at a given locus can take
gene - a unit of hereditary information, carrying the information for the production of a polypeptide
dna - the material of which genes are made
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