Genetic variation is the difference in DNA sequences between individuals within a population. Variation occurs in germ cells that are passed on from parent to offspring. Which of the following is true about mutations?Select one:a.Certain mutations allow organisms to better survive in the environment and the traits are passed on.b.Mutations in the organism's somatic cells are passed onto offspring causing variations in the population.c.Certain mutations are beneficial and lead to variation because the organism does not survive.d.Mutations are always harmful to a population when passed on.
Question
Genetic variation is the difference in DNA sequences between individuals within a population. Variation occurs in germ cells that are passed on from parent to offspring. Which of the following is true about mutations?Select one:a.Certain mutations allow organisms to better survive in the environment and the traits are passed on.b.Mutations in the organism's somatic cells are passed onto offspring causing variations in the population.c.Certain mutations are beneficial and lead to variation because the organism does not survive.d.Mutations are always harmful to a population when passed on.
Solution
The correct answer is: a. Certain mutations allow organisms to better survive in the environment and the traits are passed on.
This is because mutations can sometimes result in new traits that can help an organism survive better in its environment. If this happens, the organism is more likely to reproduce and pass on these beneficial mutations to its offspring. This process is known as natural selection and is a key mechanism of evolution.
Option b is incorrect because mutations in somatic cells (the cells that make up the body, but are not involved in reproduction) are not passed on to offspring.
Option c is incorrect because beneficial mutations do not lead to variation because the organism does not survive. On the contrary, beneficial mutations can lead to variation because they can help the organism survive and reproduce.
Option d is incorrect because not all mutations are harmful. While some mutations can be harmful or even lethal, others can be beneficial or neutral (having no effect on the organism's fitness).
Similar Questions
Which of the following best describes the genetic variation of a population?Multiple choice question.Genetic variation refers to the fact that different individuals of a population have different alleles of genes.Genetic variation refers to the fact that an individual organism's alleles for a gene can vary during its development.Genetic variation refers to the fact that in most populations there are two sets of each gene present in each individual.
The mutations that cause genetic variation occur in the
.Mutations must occur in gametes in order to be passed onto offspring.b.Most mutations do not result in a phenotype that increases the individual's fitness.c.Mutations occur very rarely in organisms.d.All mutations are harmful.e.Mutations decrease genetic variation in a population.
Mutation is an important evolutionary mechanism and occurs with a permanent change in a nucleotide sequence. Which statements about mutations are true? Select TWO correct answers.Select one or more:a.Mutations must occur in gametes in order to be passed onto offspring.b.Most mutations do not result in a phenotype that increases the individual's fitness.c.Mutations occur very rarely in organisms.d.All mutations are harmful.e.Mutations decrease genetic variation in a population.
What is variation ? List two main reasons that may lead tovariation in a population
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