Genetics and DNA Quiz
Test your knowledge of the Genetics and DNA, as part of GCSE Biology with this quiz.
This quiz consists of 15 questions, including multiple-choice and short-answer questions on the topic of Genetics and DNA for GCSE Biology.
For multiple-choice questions, choose the correct answer. Scroll down to begin the quiz.
Questions
What is an allele?
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Which of the following is a possible outcome of genetic mutation?
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What is the process of cloning in animals?
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What is one potential benefit of genetic engineering?
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Which of these is a genetic disorder caused by a recessive allele?
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What is the term for the genetic makeup of an organism?
Genotype
Explain the difference between a dominant and a recessive allele.
A dominant allele is one that will express its trait even if only one copy is present, while a recessive allele only expresses its trait when both copies are present.
What is DNA made up of?
DNA is made up of nucleotides, each containing a sugar, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, or guanine).
How does sexual reproduction lead to genetic variation in offspring?
Sexual reproduction combines genetic material from two parents, leading to different combinations of alleles in the offspring, which increases genetic variation.
What is the role of the gene in an organism's characteristics?
A gene is a sequence of DNA that codes for a protein, which contributes to the organism's characteristics or traits.
What is an example of a genetic disorder caused by a dominant allele?
Huntington's disease
What is a possible consequence of a mutation in a gene?
A mutation can result in a change in the protein produced, which may affect the organism’s traits, potentially leading to a genetic disorder or new variation.
What is meant by the term ‘cloning’ in genetics?
Cloning refers to the process of creating a genetically identical copy of an organism or cell.
Explain how genetic engineering can be used to produce genetically modified organisms (GMOs).
Genetic engineering involves altering the DNA of an organism by adding, removing, or modifying specific genes to achieve desired traits, such as resistance to pests or diseases.
What is variation, and why is it important for natural selection?
Variation refers to the differences in characteristics between individuals of the same species. It is important for natural selection because it allows organisms with advantageous traits to survive and reproduce, passing on those traits to future generations.
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