Content Covered in this Chapter

'Genotypes' are defined as:

• The genetic makeup of an organism

• The physical appearance of an organism

• The process of cell division

• The study of ecosystems

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Homozygous refers to which of the following?

• Having two identical alleles for a particular gene

• Having two different alleles for a particular gene

• Having only one allele for a gene

• Having no alleles for a gene

Heterozygous refers to an organism that has two different alleles for a particular gene.

• An organism with two different alleles for a gene

• An organism with two identical alleles for a gene

• A gene that is not expressed

• A mutation in the DNA sequence

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Homozygous dominant refers to an organism that has which type of alleles for a particular trait?

• Two dominant alleles

• Two recessive alleles

• One dominant and one recessive allele

• No alleles for the trait

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Homozygous recessive refers to an organism that has:

• Two identical recessive alleles for a trait

• Two identical dominant alleles for a trait

• One dominant and one recessive allele for a trait

• Two different alleles for a trait

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'Phenotypes' are:

• The observable physical or biochemical characteristics of an organism

• The genetic makeup of an organism

• The process of cell division

• A type of mutation in DNA

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'Codominance' is best described as:

• A genetic scenario where both alleles are equally expressed in the phenotype.

• A condition where one allele completely masks the effect of another.

• A situation where neither allele is expressed in the phenotype.

• A genetic phenomenon where alleles blend to form an intermediate trait.

'Polygenetic' refers to:

• Originating from multiple sources or factors

• Originating from a single source

• Relating to polygons

• A type of genetic mutation

Incomplete dominance is:

• a genetic situation where neither allele is completely dominant, resulting in a blended phenotype

• a genetic situation where one allele is completely dominant over the other

• a condition where both alleles are fully expressed in the phenotype

• a situation where genes are located on sex chromosomes

Mendelian Inheritance refers to:

• The manner in which traits are passed from parents to offspring according to Gregor Mendel's laws.

• The inheritance of acquired characteristics.

• The blending of parental traits in offspring.

• The inheritance of traits only through the mother.

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