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What allows for differences between individuals due to differences in inherited DNA?
Genetic variation, which is the differences in DNA sequences among individuals, allows for differences in inherited traits between individuals. This variation is the result of mutations, genetic recombination, and other processes that create unique combinations of genes in each individual. These genetic differences are responsible for the individuality and diversity seen within a population.
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Why are identical twins such a great example for studying epigenetics?
Identical twins are a great example for studying epigenetics because they share the same DNA but can have different traits and health outcomes due to differences in their epigenetic markers, which can be influenced by environmental factors. This allows researchers to better understand how epigenetic changes can impact gene expression and contribute to differences in traits and health between individuals with the same genetic makeup.
How does lateral gene transfer occur between individuals of a species?
Lateral gene transfer in a species happens when genetic material is exchanged between individuals through processes like conjugation, transformation, or transduction. This allows for the transfer of genes that can lead to genetic diversity within a population.
Which of the following may allow scientists to manipulate inherited diseases?
CRISPR technology allows scientists to edit genes and potentially manipulate inherited diseases by altering the DNA sequence. This technology enables targeted changes to specific genes that may be causing genetic disorders. Additionally, gene therapy approaches can introduce healthy genes to replace or correct defective ones in affected individuals.
Why is variation important for natural selection to occur effectively?
Variation is important for natural selection because it provides the raw material for evolution to work with. Without variation in traits among individuals, there would be no differences for natural selection to act upon. This variation allows some individuals to be better suited to their environment, increasing their chances of survival and reproduction, while less well-adapted individuals are less likely to survive and pass on their genes. Over time, this process leads to the evolution of populations with traits that are better suited to their environment.
What are the differences between flexion and extension in terms of movement and their impact on the body?
Flexion is the bending of a joint, decreasing the angle between two body parts. Extension is the straightening of a joint, increasing the angle between two body parts. Flexion and extension are important for movement and flexibility in the body. Flexion allows for movements like bending forward, while extension allows for movements like straightening the back. Both movements are essential for maintaining proper posture and range of motion in the body.
