What does it mean when chromosomes condense?
Chromosome condensation is the dramatic reorganisation of the long thin chromatin strands into compact short chromosomes that occurs in mitosis and meiosis.
At which phase of mitosis do the sister chromatids become daughter chromosomes?
anaphase
During which phase of mitosis do the chromatids become chromosomes quizlet?
During which phase of mitosis do the chromosomes separate?
During which phase of mitosis do the chromosomes line up?
Metaphase
Which correctly describes the role of histones in eukaryotic cell division?
chromosomes are made up of chromatin. which correctly describes the role of histones in eukaryotic cell division? histones allow the DNA to be compact and stay organized.
Which of the following is classified as a membrane bound organelle?
Examples of membrane-bound organelles are nucleus, endoplasmic reticulum, Golgi apparatus, mitochondria, plastids, lysosomes and vacuoles.
Is the name of globular protein around which DNA is wrapped in a chromosome?
The nucleosome is the fundamental subunit of chromatin. Each nucleosome is composed of a little less than two turns of DNA wrapped around a set of eight proteins called histones, which are known as a histone octamer. Each histone octamer is composed of two copies each of the histone proteins H2A, H2B, H3, and H4.
How many histones are in a chromosome?
eight histones
What is the relationship between histones and nucleosomes?
What are histones and how are they arranged in nucleosomes?
What are histones, and how are they arranged in nucleosomes? Histones include five main classes of relatively small basic proteins containing relatively large amounts of lysine and arginine. Nucleosomes are made of two each of four types of histones.
What type of cells have DNA associated with histones?
In eukaryotic cells, DNA is associated with about an equal mass of histone proteins in a highly condensed structure called chromatin. The building block of chromatin is the nucleosome, consisting of a histone octamer around which is wrapped about 146 bp of DNA (see Figure 9-30).
Which is larger a chromosome or a gene?
Genes exist on chromosomes, which are large strands of DNA. A gene is always smaller than its host chromosome, but not all chromosomes are the same length. That’s larger than many bacterial chromosomes.
What is the relationship between a chromosome and gene?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person’s genes. Genes are contained in chromosomes, which are in the cell nucleus.