Table of Contents
What is DNA crossing?
… Crossing over, as related to genetics and genomics, refers to the exchange of DNA between paired homologous chromosomes (one from each parent) that occurs during the development of egg and sperm cells (meiosis).
What do the DNA stand for?
Deoxyribonucleic Acid (DNA) (National Human Genome Research Institute)
What represents a genetic cross?
A genetic cross is the purposeful mating of two individuals resulting in the combination of genetic material in the offspring.
What is a crossover product DNA?
Reassorted DNA. Explanation: The splice products result in the reassortment of genes that flank the site of recombination. This type of recombinant product is known as the crossover product.
What does DNA stand for and pronounce it?
/ˌdiː en ˈeɪ/ /ˌdiː en ˈeɪ/ [uncountable] (chemistry) the chemical in the cells of animals and plants that carries genetic information and is a type of nucleic acid (the abbreviation for ‘deoxyribonucleic acid’)
What does DNA stand for school?
Date Not Available. Libraries, Books, Reading. Libraries, Books, Reading. 1. DNA.
What does a cross mean in biology?
In genetics, a cross is the breeding of two parents with different genes that produce offspring that have characteristics of both parents. In plant biology, the two parent plants have to be closely enough related to be genetically compatible.
What does Nhej stand for?
Non-homologous end joining (NHEJ) is a pathway that repairs double-strand breaks in DNA.
Is DNA recombination the same as crossing over?
The main difference between recombination and crossing over is that recombination is the production of different combinations of alleles in the offspring whereas crossing over is the exchange of genetic material between non-sister chromatids, the event which produces recombination.
What is crossover between chromosomes?
Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes’ non-sister chromatids that results in recombinant chromosomes.
What does DNA mean in Latin?
The root of the word comes from a Latin word with two parts meaning “turn” and “aside”. The word divert means “turn in new directions”. (Lesson 1) DNA is short for deoxyribonucleic acid, is a series of chemical units, called nucleic acids, that contains information for specific characteristics of organisms.
What is the real name for DNA?
Deoxyribonucleic acid
Deoxyribonucleic acid—better known by the abbreviation DNA—is a large, complex molecule that allows cells to function and carries the genetic code that determines the traits of a living organism. DNA is in every cell of every living thing. Some viruses also have DNA.
What are the 4 letters of the DNA alphabet?
Genetic Code. stored on one of the two strands of a DNA molecules as a linear, non-overlapping sequence of the nitrogenous bases Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). These are the “alphabet” of letters that are used to write the “code words”.
What is the structure of DNA called?
The two strands of DNA form a 3-D structure called a double helix. When illustrated, it looks a little like a ladder that’s been twisted into a spiral in which the base pairs are the rungs and the sugar phosphate backbones are the legs.
What are the sugar and base of DNA?
In the case of the nucleotides in DNA, the sugar is deoxyribose attached to a single phosphate group (hence the name deoxyribonucleic acid), and the base may be either adenine (A), cytosine (C), guanine (G),or thymine (T).
What holds the two strands of DNA together?
Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together (Figure 4-3). As we saw in Chapter 2 (Panel 2-6, pp.
What is intrastrand and interstrand crosslinking of DNA?
Intrastrand and interstrand crosslinking of DNA. In genetics, crosslinking of DNA occurs when various exogenous or endogenous agents react with two nucleotides of DNA, forming a covalent linkage between them. This crosslink can occur within the same strand (intrastrand) or between opposite strands of double-stranded DNA (interstrand).