Chromosomes assist in the process of cell division by distributing DNA. They act as a container to hold in the DNA molecules.Know More
Every living creature relies on cell division for its existence. Cell division is essential for the organism to grow and function. In order for cell division to occur, new cells need to receive the genetic information contained in the DNA. Because DNA molecules are too large to fit inside the cells, chromosomes ensure that the DNA makes it to the cells by holding them in and keeping them attached to proteins known as histones.
If the structure of a chromosome changes before being transferred to the new cell, malformations can occur. Similarly, if the number of chromosomes is incorrect, it can create a genetic defect. Illnesses, such as cancer, may occur as a result of a defective chromosome. Down syndrome is an example of a condition that is caused by a chromosomal error. A person with Down syndrome has an extra copy of their 21st chromosome.
Genetic information is contained in the DNA and carried by the chromosomes. This material influences the traits and characteristics inherited by the offspring. Traits, such as flower color and seed shape, in plants are determined by this genetic information. In humans, the offspring inherits two sets of chromosomes, one from each parent. The combination of these sets determines characteristics like hair color, eye color, height, and gender. Information about gender is set by the X and Y chromosomes. Males have an X chromosome and a Y chromosome, while females have a pair of Y chromosomes.Learn more about Molecular Biology & DNA
Chromosomes are made of a protein surrounded by a double-stranded nucleic acid called DNA. DNA contains genetic information that provides instructions to the cells for carrying out bodily functions.Full Answer >
Ethanol is used in DNA extraction to force the DNA to precipitate in a solution. In order to collect a DNA sample, cells are broken down through agitation, then mixed with water, salt and ethanol to create an aqueous solution. Ethanol and salt work to prevent the DNA from dissolving into the water, instead causing it to precipitate out so it can be separated and extracted using a centrifuge.Full Answer >
Genes are individual segments of DNA and chromosomes are structures which contain many genes packed together. Each chromosome contains one DNA molecule and each DNA molecule contains several genes or individual strands.Full Answer >
Chromosomes are composed of deoxyribonucleic acid strands made of gene combinations. All DNA strands consist of nucleotides, composed of a nitrogenous base, a molecule of sugar and a molecule of phosphoric acid. Specific combinations of the nitrogenous bases are gene codes that present as hereditary characteristics.Full Answer >