What are the differences between replicated and unreplicated chromosomes?
a unreplicated chromosome has one DNA molecule; a replicated chromosome has two identical DNA molecules (sister chromatids) attached at the centromere.
What do homologous chromosomes form when duplicated?
Every cell of the multicellular offspring has copies of the original two sets of homologous chromosomes. In prophase I of meiosis I, the homologous chromosomes form the tetrads.
What is a duplicated chromosome?
Chromosome duplication: Part of a chromosome in duplicate. A particular kind of mutation involving the production of one or more copies of any piece of DNA, including sometimes a gene or even an entire chromosome. A duplication is the opposite of a deletion.
When chromosomes duplicate the copies are?
Because each chromosome was duplicated during S phase, it now consists of two identical copies called sister chromatids that are attached at a common center point called the centromere.
What is the difference between replicate and duplicate?
Duplicate means to make an exact copy and can also be used as an adjective and a noun. Replicate means to reproduce something, and can also be used as an adjective and a noun.
Are homologous pairs of chromosomes exact copies of each other?
Are homologous pairs of chromosomes exact copies of each other? Homologous chromosomes are similiar but not identical. Each carries the same genes in the same order,but the alleles for each trait may not be the same. … Down syndrome is a result of an extra copy of chromosome 21.
How are homologous chromosomes defined?
Homologous chromosomes: A pair of chromosomes that contain the same gene sequences, each derived from one parent.