Histone proteins
Chromosomes are long strands of DNA which are held together by proteins.
Chromatids condense into an X shape before mitosis. Chromatids are identical strands of chromosomes. After duplication there are 12 chromatids that are in 3 pair of homologous chromosomes.
Chromosomes are not long strands of DNA. Genes are one form of long strands of DNA, specfied by meny amino acids, which are in turn specified by a codon, or three nucleotide bases. DNA actually coils or wraps around the chromosomes during certain stages of development.
Chromatin consists of DNA associated with proteins which forms long strands called chromosomes.
In a cell, the tangles of long strands of DNA form the
Chromosomes are long strands of DNA which are held together by proteins.
chromosomes. The DNA is genes that are tightly wrapped around proteins. The proteins are histones.
Chromatids condense into an X shape before mitosis. Chromatids are identical strands of chromosomes. After duplication there are 12 chromatids that are in 3 pair of homologous chromosomes.
Chromatin is made up of DNA spirals. Chromatin makes up chromosomes.
Both vary considerably among organisms and types. The DNA in humans, uncoiled from chromosomes, differs from that of a different organism. Proteins can range from dipeptides (two amino acids) to thousands of amino acids long.
Chromosomes are not long strands of DNA. Genes are one form of long strands of DNA, specfied by meny amino acids, which are in turn specified by a codon, or three nucleotide bases. DNA actually coils or wraps around the chromosomes during certain stages of development.
Chromatin consists of DNA associated with proteins which forms long strands called chromosomes.
In a cell, the tangles of long strands of DNA form the
If we use the word "chromatid", there are always two. (As with twins!)In a eukaryotic cell immediately after cell division (mitosis or meiosis), each chromosome contains only one DNA molecule.If the cell is preparing for a subsequent division, then midway through interphase the DNA replicates. Now there are two molecules of DNA in each chromosome.At the start of the following division, in prophase, the chromosomes condense, and the two DNA molecules, with their many associated proteins, become visible under a light microscope as sister-chromatids.
chromatin
The structures are called chromosomes.
A chromatin is the material that makes up both mitotic and inter phase chromosomes; a complex of proteins and DNA strands that are loosely coiled such that translation and transcription can occur.