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Mutation of the genetic code causes DNA variation in organisms. For example, during DNA replication, one nitrogen base may be substituted for another, or an extra base can be added, or a nitrogen base can be skipped. If any of these mutations occur during the formation of gametes (sex cells), then the offspring that receives the mutation may have a genetic disorder.
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What is the study of DNA called?
The study of DNA is called genetics. Genetics is the branch of biology that focuses on the inheritance, variation, and expression of genes in organisms.
How does an organism get variation?
Organisms can acquire variation through genetic mutations, which are changes in the DNA sequence. These mutations can occur spontaneously or be introduced through processes like recombination. Additionally, environmental factors can also contribute to variation by influencing gene expression and phenotype.
Which characteristic of DNA determines the variation of genetic expression in phenotypes?
The gene sequence of a DNA determines the variation of genetic expression in phenotypes.
What is the ultimate source of genetic variation and the bases for the diversity of life on earth?
mutation
What are variation?
gray wolves variation trait
Molecules responsible for hereditary and variation of organisms?
DNA and RNA are molecules responsible for heredity and variation in organisms. They carry genetic information that is passed down from one generation to the next, and mutations in these molecules can lead to variations within a species.
What are the two types of variation shown by living organisms?
The two types of variation shown by living organisms are genetic variation, which is differences in DNA sequences among individuals, and phenotypic variation, which refers to observable traits or characteristics that vary among individuals.
What kind of reproduction causes variation in organisms?
Sexual reproduction causes variation in organisms because it involves the mixing of genetic material from two parents, resulting in offspring with a unique combination of genes. This variation is essential for the adaptation and evolution of species over time.
What is the study of DNA called?
The study of DNA is called genetics. Genetics is the branch of biology that focuses on the inheritance, variation, and expression of genes in organisms.
Natural selection causes changes in populations of organisms not individual organisms because?
differential reproductive success caused by genetic variation is necessary for the process of natural selection.
What varies in one nucleotide to another in DNA?
The nitrogenous base is what causes variation. The deoxyribose and phosphate group are the same on all nucleotides.
In DNA what varies from one nucleotide to another.?
The nitrogenous base is what causes variation. The deoxyribose and phosphate group are the same on all nucleotides.
Why are mutations considered a source of heritable variation in organisms?
Mutations are considered a source of heritable variation in organisms because they are changes in the DNA sequence that can be passed down from one generation to the next. These changes can lead to differences in traits and characteristics, allowing for genetic diversity within a population.
Where does variation occur?
Variation or mutation occurs within the DNA. It is a natural result of the replication process, or the copying of one DNA strand to make new DNA during reproduction. If the new mutation ends up making some kind of variation that does not kill the organism, then the variation will be passed on to new generations. This is how new traits are formed. When the variation is actually more useful than a trait that the organism's parents had, that new variation will be passed along as a survival trait.
Which is a source of genetic variation in sexually-reproducting organisms?
Basic source of variation in all organisms is mutation .
How does an organism get variation?
Organisms can acquire variation through genetic mutations, which are changes in the DNA sequence. These mutations can occur spontaneously or be introduced through processes like recombination. Additionally, environmental factors can also contribute to variation by influencing gene expression and phenotype.
Which characteristic of DNA determines the variation of genetic expression in phenotypes?
The gene sequence of a DNA determines the variation of genetic expression in phenotypes.
