Podcast
Questions and Answers
What is heredity?
What is heredity?
What is a trait?
What is a trait?
A specific characteristic that an organism can pass to its offspring through its genes.
What is genetics?
What is genetics?
The scientific study of heredity.
What occurs during fertilization?
What occurs during fertilization?
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A purebred organism can produce offspring with different traits.
A purebred organism can produce offspring with different traits.
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What controls a trait?
What controls a trait?
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What are alleles?
What are alleles?
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A dominant allele's trait is always hidden when a recessive allele is present.
A dominant allele's trait is always hidden when a recessive allele is present.
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What is a hybrid organism?
What is a hybrid organism?
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What does phenotype refer to?
What does phenotype refer to?
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What is genotype?
What is genotype?
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Homozygous organisms have two different alleles for a trait.
Homozygous organisms have two different alleles for a trait.
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Heterozygous organisms have two identical alleles for a trait.
Heterozygous organisms have two identical alleles for a trait.
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Study Notes
Key Terms in Mendelian Genetics
- Heredity: The mechanism by which traits are transmitted from parents to their offspring.
- Trait: A distinctive characteristic or feature of an organism, determined by its genes.
- Genetics: The branch of biology focused on the study of heredity and variation in organisms.
Reproductive Processes
- Fertilization: A critical step in sexual reproduction where male and female gametes combine to create a new organism.
- Purebred: Refers to an organism that consistently produces offspring with identical traits as itself.
Genetic Components
- Gene: The fundamental unit responsible for hereditary traits, influencing specific characteristics.
- Allele: Variants or different forms of a gene that define specific traits.
Dominance in Alleles
- Dominant Allele: An allele that expresses its trait in the phenotype whenever present, overshadowing recessive alleles.
- Recessive Allele: An allele whose trait remains unexpressed unless two copies are present, as it is masked by dominant alleles.
Genetic Combinations
- Hybrid: An organism that carries different alleles for a particular trait, resulting from crossbreeding.
- Phenotype: The observable attributes of an organism, shaped by both its genotype and environmental factors.
- Genotype: The genetic configuration or the specific alleles present in an organism.
Allele Configurations
- Homozygous: A genetic condition where an organism has identical alleles for a trait, either both dominant or both recessive.
- Heterozygous: A situation in which an organism possesses two distinct alleles for a trait, combining both dominant and recessive traits.
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Description
Explore fundamental concepts of Mendelian Genetics through interactive flashcards. This set covers key terms such as heredity, traits, and fertilization, essential for understanding genetic inheritance.
