Duplication
When a chromosome has made a copy of itself, each of the two strands is called a sister chromatid. Sister chromatids are identical copies formed during DNA replication and are joined at the centromere.
Chromosomes are roughly made up of proteins and DNA
A chromosome consists of two chromatids, which are identical copies of DNA joined at a central region called the centromere. During cell division, these chromatids are separated to ensure that each daughter cell receives an identical set of chromosomes. Therefore, while a chromosome is structurally made up of two chromatids, it is typically referred to as a single chromosome in this context.
DNA and proteins called histones
It is made up of genes.
When a chromosome has made a copy of itself, each of the two strands is called a sister chromatid. Sister chromatids are identical copies formed during DNA replication and are joined at the centromere.
Chromosomes are roughly made up of proteins and DNA
A chromosome consists of two chromatids, which are identical copies of DNA joined at a central region called the centromere. During cell division, these chromatids are separated to ensure that each daughter cell receives an identical set of chromosomes. Therefore, while a chromosome is structurally made up of two chromatids, it is typically referred to as a single chromosome in this context.
DNA and proteins called histones
It is made up of genes.
A chromosome is made up of DNA, which has subunits called nucleotides.
The thread-like strand made of DNA is called a chromosome. Chromosomes are structures within cells that contain the genetic material needed for growth, development, and function. Humans normally have 46 chromosomes in each cell.
Chromosomes are made of DNA and contains genes. These genes code for RNA and proteins which include structural proteins, hormones, enzymes, antibodies and many more. The enzymes speed up chemical reactions within the body that are essential for life and control many of the traits that you can see e.g eye colour, skin colour etc. Genes can be in different forms e.g blue eyes or brown eyes and these are called alleles. We have 2 copies of every chromosome and so 2 copies of every gene
A chromosome is made up of many genes.
Down syndrome is caused by the presence of an extra copy of chromosome 21 in a person's cells. This additional genetic material disrupts typical development and can lead to intellectual disabilities and physical features commonly associated with Down syndrome. The extra chromosome can come from either the egg or the sperm during fertilization.
Well in eukaryotic cells each chromosome has a telomere on each end (to prevent it from unraveling), but I'm not 100% certain that these telomeres are identical although they contain very long repetitions of the same nucleotides. But in bacteria the chromosome is ring shaped and is all genes (there are no noncoding sequences, e.g. centromeres, telomeres, introns, pseudogenes, transposons) so there are no identical parts.
The antonym for chromosome is "gene," as chromosomes are made up of genes that contain the genetic instructions for an organism.