A chromatid is one of two identical halves of a replicated chromosome. … Following DNA replication, the chromosome consists of two identical structures called sister chromatids, which are joined at the centromere.
What is half of a doubled chromosome?
A chromatid (Greek khrōmat- ‘color’ + -id) is one half of a duplicated chromosome. Before replication, one chromosome is composed of one DNA molecule.
How do you know if a chromosome is duplicated?
The difference between a duplicated chromosome and a chromatid, strictly speaking, is that a chromosome contains two chromatids that are joined at a structure called a centromere. A duplicated chromosome therefore includes two identical strands joined along their length at corresponding lengths of DNA.
How many centromeres are in a duplicated chromosome?
Cliffs AP bio says there is 1 centromere per chromosome.. but after a duplicated chromosome splits, the chromatids are considered chromosomes because each chromatid has 1 centromere.