Simple Inheritance Quiz

What is the definition of heredity?

• The process by which organisms choose their traits during their lifetime.

• The passing of traits from parents to offspring through genes.

• Changes in an organism caused by its environment.

• The study of how organisms grow and develop over time.

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Statement: Dominant alleles are always the most common in the population. True or False?

• True – Dominant alleles are always found in more than half of the population.

• False – If an allele is recessive, it will always be rare.

• True – Dominant traits automatically become the most common over time.

• False – Dominance refers to if a gene is expressed physically, not how common it is in a population.

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How did Gregor Mendel contribute to the study of genetics?

• He was the first scientist to identify DNA as the genetic material.

• He created the first model of the double helix structure of DNA.

• He discovered that traits are inherited in predictable patterns by studying pea plants.

• He proved that all traits are blended from parents rather than inherited as separate units.

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How do you get the F2 generation?

• By crossing two organisms from the P generation.

• By allowing the F1 generation to self-pollinate or cross with another F1 individual.

• By mixing traits from different species.

• By selecting only dominant traits for breeding.

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Which metaphor best describes what an allele is?

• An allele is like a different topping on a pizza—each topping changes the final look and taste

• An allele is like the crust of a pizza—it stays the same no matter what toppings you add.

• An allele is like the size of the pizza—larger or smaller, but it doesn’t change the actual ingredients

• An allele is like the oven used to bake the pizza—it makes the final product.

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Which of the following statements best describes dominant and recessive alleles?

• A recessive allele always hides the effect of a dominant allele when both are present.

• Both dominant and recessive alleles are equally expressed in the offspring.

• A dominant allele always hides the effect of a recessive allele when they are present.

• Dominant alleles are never passed on to offspring, only recessive alleles are inherited.

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The trait that will be expressed only if two copies of the allele are present.

• Recessive

• Dominant

• DNA

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Which of the following best describes the difference between genotype and phenotype?

• Genotype refers to the physical appearance of an organism, while phenotype refers to the genetic makeup.

• Genotype and phenotype both refer to the physical traits of an organism.

• Genotype and phenotype are the same and can be used interchangeably.

• Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits.

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Which of these are genotype and which are phenotype?​ ​ ​ ​ ​ ​

Groups:

(a) Genotype

,

(b) Phenotype

• TT

• Brown Hair

• aa

• Ff

• Homozygous recessive

• Purple Flower

• Tall

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Which of the following best explains why a recessive trait might appear in the offspring even if both parents display the dominant trait?

• One parent is homozygous recessive.

• Both parents are homozygous dominant.

• The recessive trait is more common in the population.

• Both parents are heterozygous, carrying the recessive allele.

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