1. what are the two chemical components of chromosomes?
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The two chemical components of chromosomes are DNA and protein.
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A chromosome is made up of a single, double-stranded DNA molecule while a chromatid comprises of two DNA strands joining collectively by their centromere. The chromatids contain a substance called chromatin. ... In the case of chromatids, each sister chromatid is an exact replication of the other.
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A chromosome is made up of a single, double-stranded DNA molecule while a chromatid comprises of two DNA strands joining collectively by their centromere. The chromatids contain a substance called chromatin. It is a single, very long strand of DNA.
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What is a chromosome? Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
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['FIRST PART. CELLS CONTAIN DNA THAT IS PASSED CELL TO CELL DURING CELL DIVISION.', 'SECOND PART. CELLS ARE SIMILAR IN CHEMICAL COMPOSITION AND REACTIONS THAT MAINTAIN HOMEOSTASIS.', 'THIRD PART. ALL BASIC CHEMICAL AND PHYSIOLOGICAL FUNCTIONS ARE CARRIED OUT INSIDE THE CELL.', 'FOURTH PART.']
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['Genes are contained in chromosomes, which are in the cell nucleus.', 'A chromosome contains hundreds to thousands of genes.', 'Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes.']
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DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division. Each chromosome has a centromere, which divides the chromosome into two sections – the p (short) arm and the q (long) arm.
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The chromosome consists of a single chromatid and is decondensed (long and string-like). The DNA is copied. The chromosome now consists of two sister chromatids, which are connected by proteins called cohesins.
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The chromosomes and genes are made of DNA, which is short for deoxyribonucleic (say: dee-ox-see-ri-bo-nyoo-CLAY-ik) acid. Most cells have one nucleus (say: NOO-clee-us). The nucleus is a small egg-shaped structure inside the cell which acts like the brain of the cell.
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The two main stages of cell division are mitosis and cytokinesis. When chromosomes become visible at the beginning of cell division, what does each chromosome consist of? Each chromosome consists of two identical "sister" chromatids.
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Chromatin is a substance within a chromosome consisting of DNA and protein. The DNA carries the cell's genetic instructions. The major proteins in chromatin are histones, which help package the DNA in a compact form that fits in the cell nucleus.
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In eukaryotic cells, chromosomes are located in the nucleus, and are made up of chromatin.
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Chromatin is the DNA and proteins that make up a chromosome. Chromosomes are the separate pieces of DNA in a cell. And Chromatids are identical pieces of DNA held together by a centromere.
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Now, a chromosome is made up of two strands which are identical to each other and these are called Chromatids. The major difference between Chromosome and Chromatid are summarized below. A chromosome is made up two Identical Sister Chromatids. And each sister chromatids are joined at the centromere.
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A diploid cell starts with 2N chromosomes and 2X DNA content. After DNA replication, the cells is still genetically diploid (2N chromosome number), but has 4X DNA content because each chromosome has replicated its DNA. Each chromosome now consists of a joined pair of identical sister chromatids.
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Chromosome- a chromosome is a coiled thread-like structure that contains the genetic material of organisms. A chromosome is the condensed form of a chromatin, which in turn is made up of the DNA and proteins called Histones. So, Chromosome is said to be composed of the identical sister chromatids.
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Correct. During metaphase each chromosome consists of two identical, double-stranded DNA molecules. Therefore, if a cell normally contains 12 chromosomes, there will be 24 molecules of DNA during metaphase.