What is a chromosome apex?
A chromosome is made of a single, long DNA double helix wrapped around proteins called histones. The DNA and histones together form a nucleosome. The nucleosomes pack together to form a chromosome.
What is chromosome class 10th?
Hint: Chromosomes are thread-like structures which are located inside the nucleus of the cell and each of these chromosomes are made up of proteins and deoxyribonucleic acid (DNA) which is passed on from one generation to another.
What is the function of a chromosome apex?
Function of a Chromosome
The chromosome holds not only the genetic code, but many of the proteins responsible for helping express it. Its complex form and structure dictate how often genes can be translated into proteins, and which genes are translated.
What are chromosomes an organism that contains DNA?
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). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
What is an allele apex?
One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. … An allele is a viable DNA (deoxyribonucleic acid) coding that occupies a given locus (position) on a chromosome.
What happens during G1 phase apex?
The G1 phase is often referred to as the growth phase, because this is the time in which a cell grows. During this phase, the cell synthesizes various enzymes and nutrients that are needed later on for DNA replication and cell division. … The G1 phase is also when cells produce the most proteins.
What is chromosome function Class 8?
Chromosomes are found in the nucleus of a cell. Function: Chromosomes carry genes and help to transfer characters from the parents to the offspring.
What is chromosome and its function Class 8?
Chromosomes are thread-like structures present in the nucleus of a eukaryotic cell, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.
What are chromosomes and genes Class 8?
Chromosomes are pack of cells which contain genes inside human body. It is located in the chromosome. It is located as packed structure of DNA with proteins inside cells f a person. Genes are composed of nucleic acids like DNA or RNA.
What is a chromosome ks3?
The chromosomes are found in the nucleus of each cell. Each cell with a nucleus contains chromosomes, which are made from DNA. Human body cells each contain 23 pairs of chromosomes, half of which are from each parent. So, human gametes (eggs and sperm) each contain 23 chromosomes.
What does the nucleus do?
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.
What is the definition of nucleus in biology?
A nucleus is a membrane-bound organelle that contains the cell’s chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.
What is meant by chromosome explain its types?
Answer: Chromosomes are basic building blocks of life that carry all of the information used to help a cell grow, thrive and reproduce. Chromosomes are made up of DNA. There are four types of chromosomes- metacentric, sub-metacentric, acrocentric and telocentric chromosomes.
What is chromosome composed of?
A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
What is chromosome and its function?
Chromosomes are thread-like structures present in the nucleus, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.