ANIMAL REPRODUCTION AND DEVELOPMENT
SEXUAL REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Some individuals have the same genes as others
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Some genes are multiplied in tetraploid organisms
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Some chromosomes are longer than others
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Some individuals have different genes than others
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Detailed explanation-1: -Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.
Detailed explanation-2: -Genetic variation is the difference in DNA sequences between individuals within a population. Variation occurs in germ cells i.e. sperm and egg, and also in somatic (all other) cells.
Detailed explanation-3: -Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique. They account for the variation we see in human hair color, skin color, height, shape, behavior, and susceptibility to disease.
Detailed explanation-4: -Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing environmental circumstances.
Detailed explanation-5: -Genetic diversity is defined as genetic variability present within species. Genetic variation is caused due to mutations and recombination between homologous chromosomes during meiosis at the time of gamete formation.