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Heredity is the passing of traits from parent to offspring.

Explore the passing of traits from parent to offspring, study genetics, Mendel's experiments with pea plants, asexual vs sexual reproduction, and examples in various organisms. Learn about the advantages and disadvantages of both reproduction types.

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Heredity is the passing of traits from parent to offspring.

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  1. Heredity is the passing of traits from parent to offspring. Heredity is responsible for how you have your mother’s eyes and your father’s smile. Along with this inherited similarity though, there is also variation, as we are not exact clones of our mothers and fathers.

  2. Offspring are the new organisms produced by one or more parents. (children, babies, young)

  3. The study of heredity in biology is called genetics.

  4. The Father of Genetics Gregor Mendel was an Austrian monk who studied mathematics and science but became a gardener in a monastery.

  5. Mendel thought there might be a connection between the color of a pea plant flower and the type of seed the plant produced. • He began to experiment with garden peas in 1856. • Mendel made careful use of experimental design to study pea plants and had the first recorded study of how traits pass from one generation to the next.

  6. Asexual Reproduction • Requires only one parent • Offspring have 100% the same chromosomes as the parent. • In other words, the offspring are exact “clones”of the parent. • Mitosis • Movie

  7. Asexual Reproduction Advantages: • Animals that remain in one particular place and are unable to look for mates would need to reproduce asexually. • Numerous offspring can be produced without "costing" the parent a great amount of energy or time. This type of reproduction is also faster. • Environments that are stable and experience very little change are the best places for organisms that reproduce asexually. Disadvantages: • Lack of genetic variation - all of the organisms are genetically identical and therefore share the same weaknesses. • If the stable environment changes, the consequences could be deadly to all of the individuals. *Animals are not the only organisms that reproduce asexually. Yeasts, plants, and bacteria are capable of asexual reproduction as well.

  8. Sexual reproduction: a type of reproduction in which two cells, usually an egg and a sperm, join to form a new organism with its own genetic identity. Plant Animal

  9. Sexual Reproduction • Sexual Reproduction results in a variety of off spring. powerofpeace.com

  10. Sexual Reproduction Advantage: • Allows genetic variation within a species which assists with the species survival Disadvantages: • Requires 2 parents • Reproduction is slower

  11. Sexual Reproduction • Most members of the Animal Kingdom • Fish • Mammals • Amphibians • Birds • Reptiles • Insects • Crustaceans

  12. Sexual Reproduction • Examples of organisms that reproduce sexually • Chickens • Iguanas • Lobsters • Sharks • Humans • Butterflies • Sunflowers • Roses

  13. Sexual Reproduction • Happens 2 ways • Internally (inside) • The egg is fertilized by sperm inside the female • Mammals, birds, reptiles, insects, spiders • Externally (outside) • The egg is fertilized by sperm outside the female • The female lays the eggs and then the male fertilizes them. • Fish and some amphibians • Plants and fungi (pollen and spores)

  14. Asexual Reproduction • Examples of organisms that reproduce asexually • Hydra • Sea Star • Strawberry • Eubacteria • Euglena • Paramecium • Yeast

  15. Types of Asexual Reproduction • Fragmentation Fragmentation is where a single parent breaks into parts that regenerate into whole new individuals. Ex. Planaria

  16. Types of Asexual Reproduction • Vegetative Propagation (Plant cuttings) • http://leavingbio.net/VEGETATIVEPROPAGATION.htm Vegetative reproduction is a type of asexual reproduction in plants where new parts grow from parts of the parent plant. It has long been used in horticulture and agriculture. Ex. Spider Plant

  17. Types of Asexual Reproduction • Binary Fission • Bacteria • Protists Binary fission is a form of asexual reproduction where every organelle is copied and the organism divides in two.

  18. Types of Asexual Reproduction • Budding • Movie Budding is where a new individual develops from an outgrowth of a parent, splits off, and lives independently.

  19. Types of Asexual Reproduction • Regeneration Regeneration occurs when a body part has broken off and the organism grows a new one. Ex. Lizard Tail *The ability to restore lost or damaged tissues, organs or limbs

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