chromosomal vocab

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Chromosome (2)
structure made up of DNA and proteins
- -carries the cells heriditary information
- *genes
sex chromosome
- chromosome asosciated with an individuals sex
- *XY
autosome

a non-sex chromosome
unreplicated chromosome

chromosome that consists of a single copy
replicated chromosome (2)

-a chromosome that has been copied

-consists of two linear structures joined at the centromere
sister chromatids

the chromosome copies in a replicated chromosome
Homologous chromosomes
- in a diploid organism, chromosomes that are similar in size,shape, and gene content
- *one from dad and mom
non sister chromatids
- chromosome copies in homologus chromosomes
- *not alike
tetrad

homologous chromosomes that are joined together
haploid number
- number of differnt types of chromosomes in a cell
- *n
diploid number
- number of chromosomes present in a diploid cell
- *2n
ploidy (2)

-number of each type of chromosome present

-equivalent to the number of haploid chromosome sets present
(ploidy) haploid
- having one of each type of chromosome
- *n
(ploidy) Diploid
- having 2 of each type of chromosome
- *2n
(ploidy) Polyploid
- having more than 2 of each type of chromosome
- *3n=triploid
- *4n= tetraploid