Podcast
Questions and Answers
What is heredity?
What is heredity?
Transmission of traits from generation to generation.
What does phenotype refer to?
What does phenotype refer to?
An individual's observable traits.
What is the definition of genotype?
What is the definition of genotype?
The genetic composition of a cell or organism.
What does variation in biology mean?
What does variation in biology mean?
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Which of the following terms describes a natural grouping of similar plants?
Which of the following terms describes a natural grouping of similar plants?
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What are cultivars?
What are cultivars?
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Name a common example of variation in plants.
Name a common example of variation in plants.
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Darwin’s finches show __________ in beak shape.
Darwin’s finches show __________ in beak shape.
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Which banana variety is known as Señorita?
Which banana variety is known as Señorita?
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Match the following plants with their varieties:
Match the following plants with their varieties:
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Which animal types exhibit variation?
Which animal types exhibit variation?
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Study Notes
Genetics & Heredity
- Heredity refers to the transmission of traits from one generation to the next.
- Variation refers to any difference among individuals in a species or groups of organisms of any species.
Genetic Terminology
- Trait: a specific characteristic of an individual determined by genes, environmental factors, or a combination of both; can be qualitative or quantitative
- Phenotype: an individual’s observable traits determined by both their genetic makeup (genotype) and environmental factors
- Genotype: the genetic composition of a cell or organism; refers to the alleles (variant forms of a gene) carried by an organism
Variation Overview
- Variation encompasses all the differences that exist in a population of the same species.
- Variations in plants and animals are crucial for the survival and evolution of a species.
Plant Variation
- Bananas (Musa sp.) exhibit variation in size, shape, and color of the fruit, with examples like Lakatan, Latundan, Saba, Señorita, Cavendish, and Morado.
- Croton (Codiaeum variegatum) species demonstrates leaf variations in color and shape—from oval to linear.
- Coleus (Solenostemon scutellarioides) includes cultivars like Mayana, Wizard Jade, Giant Exhibition Rustic Red, Henna, and Chocolate Covered Cherry, showing variations in leaf size, shape, and colour.
- Gumamela (Hibiscus sp.) exhibits variation in flower color and size, with examples like Anne Arundel (H.moscheutos), Blue Bird (H.syriacus), and Donna Lynn (H.rosa-sinensis).
Plant Taxonomy Terminology
- Species: a natural grouping of similar plants that can interbreed and reproduce by seed.
- Variety: appears naturally within a species, but it has some distinctive trait which sets it apart.
- Cultivar: ‘cultivated varieties;’ subspecies classification describing plants varieties produced through artificial selection.
Animal Variation
- Cone shells (Conus sp.) exhibit variation in species, with examples like Conus generalis, Conus textile, and Conus betulinus, which demonstrate size, shape, and colour differences.
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Description
Test your knowledge on the principles of genetics and heredity. This quiz covers key terms such as traits, phenotype, and genotype, as well as the importance of variation in species. Explore how these concepts apply to both plants and animals.
