According to current definitions, each single chromatid is regarded as a own chromosome after separation of the chromatids during cell division. In most organisms chromosomes occur in pairs, the so-called homolog chromosomes (homolog = similar/corresponding).
Do chromosomes always have 2 chromatids?
The two identical chromosomes that result from DNA replication are referred to as sister chromatids. Sister chromatids are held together by proteins at a region of the chromosome called the centromere. … Chromosomes can have 1 or 2 chromatids, depending on whether they have replicated.
How many DNA is in a chromosome?
One chromosome has 2 strands of DNA in a double helix. But the 2 DNA strands in chromosomes are very, very long. One strand of DNA can be very short – much shorter than even a small chromosome. Strands of DNA are made by joining together the 4 DNA bases in strings.
What are the two halves of a duplicated chromosome called?
Definition: A chromatid is one of two identical halves of a replicated chromosome .
What 2 structures make up a single replicated chromosome?
27 Cards in this Set
|Whats this||A sematic cell, 2n, diploid|
|Considering what you already know about mitosis in cells, what event must take place during interphase before a cell proceeds to division?||DNA duplication|
|What two structures make up a single replicated chromosome?||Sister chromatids|