Genes. Chromosomes and Inheritance
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11 Terms
what is a gene
a section of DNA that contains the coded information for making polypeptides and RNA
what is a locus
a particular position on a dna molecule (where a gene is located)
when are chromosomes only visible as structures
during cell division
what are dna in chromosomes held by`
histone proteins
what does homolgous mean
when one of each pair of chromosomes is derived from the chromosomes provided by the mother and the other pair is derived from the chromosomes provided by the father
what does diploid number mean
the total number of chromosome pairs
how many chromosome pairs is in humans diploid number
46
a homolgous pair carries the same ___ but not the same ____ of genes
- gene
- allele
what is an allele
one of the different forms of a gene
any change in the base sequence of a ___ produces a new ____ of that gene
- gene
- allele
what is a homologous pair of chromosomes
two chromosomes that carry the same gene
