BIOL 207 - 3
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What properties determine the name of a chromsome?
- Location of Centromere
What are the 2 types of occurences in human chromosomes?
- Present in 2 copies = Autosomes
- Not present in 2 copies (singular) = sex chr.
What are the 3 positions and names of centromere locations?
- Middle = metacentric
- Towards one end = acrocentric
- At one end = telocentric
Which centromere location do humans lack?
What is the difference between karyogram and karyotype?
- Karyogram = image
- Karyotype = description
What is the proper way to name a chromosome?
total # of chr, sex chr, abnormalities
ex. normal human female: 46, XX
When referring to chr bands, what does 5p15 mean?
What are the parts of a chr?
- p - short arm
- q - long arm
- cen - centromere
- ter - terminus
- pter - end of short arm
- qter - end of long arm
What symbols are used for chr number abnormalities?
- + extra copy of ____
- - absence of ___
What are the chr rearrangements?
- del - deletion
- dup - duplication
- inv - inversion
- t - translocation
What does 46, XX, del(5)(p15pter) means?
- 46 chr
- Deletion on chr 5 on the p-arm from region 1, band 5 to the end of the p-arm
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