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Statement A : genetic recombination is one of the source of variation ,
Statement B : Natural selection may lead to the evolution of a new group
- a)Statement B is true, A is false
- b)Statement A is true, B is false
- c)Both the statement A and B are true
- d)Neither statement A nor Statement B is true
Correct answer is option 'C'. Can you explain this answer?
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Statement A : genetic recombination is one of the source of variation ...
For a given population, there are three sources of variation: mutation, recombination, and immigration of genes.
The mechanism that Darwin proposed for evolution is natural selection. ... Natural selection causes populations to become adapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.
The mechanism that Darwin proposed for evolution is natural selection. ... Natural selection causes populations to become adapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.
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Statement A : genetic recombination is one of the source of variation ...
Statement A: Genetic recombination is one of the sources of variation.
Genetic recombination refers to the process by which genetic material from two different sources combines to form a new combination of genes. This process occurs during the formation of gametes (sex cells) in organisms that reproduce sexually. During genetic recombination, chromosomes exchange genetic material through a process called crossing over.
Statement B: Natural selection may lead to the evolution of a new group.
Natural selection is the process by which certain traits become more or less common in a population over time, based on their ability to survive and reproduce. It acts on the variation present in a population and allows individuals with favorable traits to have a higher chance of survival and reproduction.
Explanation:
Both Statement A and Statement B are true.
1. Statement A: Genetic recombination is one of the sources of variation.
- Genetic recombination plays a crucial role in generating genetic variation within a population. It introduces new combinations of genes into the offspring, which leads to genetic diversity.
- This variation is essential for the survival and adaptation of a population in changing environments. It allows for the potential emergence of individuals with advantageous traits that increase their chances of survival and reproduction.
2. Statement B: Natural selection may lead to the evolution of a new group.
- Natural selection acts on the variation present in a population. It favors individuals with traits that are better suited to their environment, increasing their chances of survival and reproduction.
- Over time, as certain traits become more common in a population due to natural selection, the population may diverge and eventually form a new group or species. This process is known as speciation.
- Speciation occurs when a population becomes reproductively isolated from each other, preventing gene flow between the groups. This isolation allows for genetic divergence and the formation of distinct groups.
In conclusion, genetic recombination provides a source of genetic variation, while natural selection acts on this variation and can lead to the evolution of new groups or species. Both processes are fundamental to the understanding of evolution and the diversity of life on Earth.
Genetic recombination refers to the process by which genetic material from two different sources combines to form a new combination of genes. This process occurs during the formation of gametes (sex cells) in organisms that reproduce sexually. During genetic recombination, chromosomes exchange genetic material through a process called crossing over.
Statement B: Natural selection may lead to the evolution of a new group.
Natural selection is the process by which certain traits become more or less common in a population over time, based on their ability to survive and reproduce. It acts on the variation present in a population and allows individuals with favorable traits to have a higher chance of survival and reproduction.
Explanation:
Both Statement A and Statement B are true.
1. Statement A: Genetic recombination is one of the sources of variation.
- Genetic recombination plays a crucial role in generating genetic variation within a population. It introduces new combinations of genes into the offspring, which leads to genetic diversity.
- This variation is essential for the survival and adaptation of a population in changing environments. It allows for the potential emergence of individuals with advantageous traits that increase their chances of survival and reproduction.
2. Statement B: Natural selection may lead to the evolution of a new group.
- Natural selection acts on the variation present in a population. It favors individuals with traits that are better suited to their environment, increasing their chances of survival and reproduction.
- Over time, as certain traits become more common in a population due to natural selection, the population may diverge and eventually form a new group or species. This process is known as speciation.
- Speciation occurs when a population becomes reproductively isolated from each other, preventing gene flow between the groups. This isolation allows for genetic divergence and the formation of distinct groups.
In conclusion, genetic recombination provides a source of genetic variation, while natural selection acts on this variation and can lead to the evolution of new groups or species. Both processes are fundamental to the understanding of evolution and the diversity of life on Earth.
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Statement A : genetic recombination is one of the source of variation ,Statement B : Natural selection may lead to the evolution of a new groupa)Statement B is true, A is falseb)Statement A is true, B is falsec)Both the statement A and B are trued)Neither statement A nor Statement B is trueCorrect answer is option 'C'. Can you explain this answer?
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