Unit 7(B) Test- Heredity

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What is heredity?

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Heredity is the passing of traits from parents to offspring through genes.

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What are genes?

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Genes are segments of DNA that contain the instructions for the development and functioning of living organisms.

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What is the difference between genetic traits and environmental traits?

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Genetic traits are inherited from parents, while environmental traits are influenced by external factors such as diet, climate, and lifestyle.

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What are polygenic traits?

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Polygenic traits are traits that are influenced by multiple genes, resulting in a range of phenotypes.

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What is gene expression?

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Gene expression is the process by which information from a gene is used to synthesize a functional gene product, usually a protein.

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What is the role of the environment in heredity?

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The environment can influence the expression of genetic traits, leading to variations even among genetically identical individuals.

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What is codominance?

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Codominance is a type of inheritance where both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive.

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What is incomplete dominance?

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Incomplete dominance is a type of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

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How does temperature affect the gender of certain species?

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In some species, such as certain reptiles, the incubation temperature can determine the gender of the offspring, with specific temperatures favoring the development of males or females.

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What is an environmental factor?

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An environmental factor is any external condition or influence that can affect the growth, development, and behavior of an organism.