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What is the ultimate source of genetic variation and the bases for the diversity of life on earth?
mutation
What is the ultimate souce of genetic variation and the basis for the diversity of life on earth?
Interchange of genetic material during meiosis and random union of male nad female gametes during fertilization.
How does genetic variation prevent extinction of a species?
Genetic variation allows individuals within a species to have different traits that might be advantageous in changing environmental conditions. This diversity increases the chances that some individuals will survive and reproduce when faced with new threats or challenges, helping to prevent extinction. High genetic variation also provides a larger pool of traits for natural selection to act upon, promoting the species' ability to adapt over time.
Why the combination of alleles called genotype?
A genotype refers to the specific combination of alleles that an individual possesses for a particular gene. These alleles can be dominant or recessive, and their combination determines the individual's traits or phenotype. Genotypes are crucial in understanding inheritance patterns and the genetic basis of traits, as they provide insight into how genetic variation contributes to diversity within a population.
Biologists and anthropologists generally agree on a five member classification system to universally distinguish one race from another?
Biologists and anthropologists generally do not use a classification system to distinguish races. Many scientists believe that the concept of race is a social construct and does not have a biological basis. Instead, they focus on genetic variation within and between populations to understand human diversity.
What is the ultimate source of genetic variation and the basis for the diversity of on earth?
mutation
What is the ultimate source of genetic variation and the bases for the diversity of life on earth?
mutation
What is the ultimate souce of genetic variation and the basis for the diversity of life on earth?
Interchange of genetic material during meiosis and random union of male nad female gametes during fertilization.
What is the ultimate source of genetics variation and the basis for the diversity of life on earth?
mutation
What does heritable variation mean?
Heritable variation refers to differences in traits or characteristics among individuals that are passed down from one generation to the next through genetic mechanisms. These variations are inherited from parents and contribute to the overall genetic diversity within a population.
What is the ultimate source of genetic variation and the basis for the diversity of life on earth?
Mutations. These have quite a few different causes. Sexual reproduction is a "more recent source" {beginning 600 million years ago} of genetic variability. The process of sharing genetic information, coupled with the random crossing and mixing of genetic information during the creation of a new organism, leads to another source of genetic variability.
How does genetic variation prevent extinction of a species?
Genetic variation allows individuals within a species to have different traits that might be advantageous in changing environmental conditions. This diversity increases the chances that some individuals will survive and reproduce when faced with new threats or challenges, helping to prevent extinction. High genetic variation also provides a larger pool of traits for natural selection to act upon, promoting the species' ability to adapt over time.
How is variation beneficial to a population of organisms?
If that variation is selected on the basis of survivability and reproductive success then the populations gene pool allele frequency changes and the population becomes better adapted to the immediate environment, or adapted to a new and changing environment.
How does genetic variation and mutations relate to each other?
mutation brings about variation which is the basis of evolution and the two types of variation are heritable and non-heritable
Is adaptations a genetic basis for variation within a species?
No, adaptations usually do not result in any genotypical change in a species.
Why the combination of alleles called genotype?
A genotype refers to the specific combination of alleles that an individual possesses for a particular gene. These alleles can be dominant or recessive, and their combination determines the individual's traits or phenotype. Genotypes are crucial in understanding inheritance patterns and the genetic basis of traits, as they provide insight into how genetic variation contributes to diversity within a population.
Which two factors provide the genetic basis for variation within a species?
mutations and sexual reproduction (due to random orientation of bivalents about the equatorial spindle during metaphase I and pairs of chromatids during metaphase II; fusion of male and females gametes during fertilization; and reciprocal crossing over)
