DNA
Chromosomes
Genetic Variation
Heredity
Organisms
100
DNA is a molecule that encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses
What is DNA?
100
A chromosome is a packaged and organized structure containing most of the DNA of a living organism.
What is a chromosome?
100
Genetic variation
_____ _____ is a fact that a biological system – individual and population – is different over space. It is the base of the genetic variability of different biological systems in space?
100
Heredity
_____ is the passing of phenotypic traits from parents to their offspring, either through asexual reproduction or sexual reproduction.
100
organism
an ____ is any contiguous living system, such as a vertebrate, insect, plant or bacterium
200
DNA
____ is a nucleic acid; alongside proteins and carbohydrates, nucleic acids compose the three major macromolecules essential for all known forms of life.
200
cells
Chromatin is present in most _____?
200
Genetic variation
______ ______ is based on the variation in alleles of genes in a gene pool?
200
polymorphic genes
_____ _____ have more than one allele at each locus. Half of the genes that code for enzymes in insects and plants may be polymorphic, whereas polymorphisms are less common in vertebrates?
200
cells
An organism consists of one or more ____.
300
biological information storage
DNA is well-suited for _____ _____ _____?
300
mitosis
Chromosomes are normally visible under a light microscope only when the cell is undergoing _____.
300
variant genes
It occurs both within and among populations, supported by individual carriers of the _____ _____?
300
nucleotides
genetic variation is caused by variation in the order of bases in the ______ in genes?
300
unicellular organism
An organism with one cell is a ______ ______ .
400
The DNA backbone
is resistant to cleavage, and both strands of the double-stranded structure store the same biological information.
400
centromere
Two "sister" chromatids (half a chromosome) join together at a protein junction called a ____?
400
random mutation
Genetic variation is brought about by _____ ____, which is a permanent change in the chemical structure of a gene?
400
New technology
______ _____ now allows scientists to directly sequence DNA which has identified even more genetic variation than was previously detected by protein electrophoresis?
400
prokaryote or a eukaryote.
An organism may be either a _____ ____ _____.
500
DNA origami and DNA-based hybrid materials
Scientists use DNA as a molecular tool to explore physical laws and theories, such as the ergodic theorem and the theory of elasticity. The unique material properties of DNA have made it an attractive molecule for material scientists and engineers interested in micro- and nano-fabrication. Among notable advances in this field are _____ _____ ____ ____ - ____ ____ _____ _____ ?
500
bacterial origins
Small circular genomes called plasmids are often found in bacteria and also in mitochondria and chloroplasts, reflecting their ______ ______?
500
variety of levels
Genetic variation among individuals within a population can be identified at a _____ __ _____?
500
Examination
_____ of DNA has shown genetic variation in both coding regions and in the non-coding intron region of genes?
500
Prokaryotes
____ are represented by two separate domains, the Bacteria and Archaea.
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