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TEKS 7.14B compare the results of uniform or divers offspring from sexual reproduction or asexual reproduction Reproduction: Asexual vs. Sexual Reproduction is important for the survival of all living species. Without a way to reproduce, life would come to an end. There are two types of reproduction, asexual and sexual. Comparing sexual with asexual reproduction: Sexual Definition Advantages Sexual reproduction involves fertilization so it typically requires the sex cells of two parents. Asexual reproduction involves one parent and results in an exact duplicate of an organism. The offspring will be different from its parents. Genetic variation allows the species to adapt to its surroundings. “Good” traits are passed on and strengthen the species which increases their survival rate. The fertilized egg can sometimes survive in adverse conditions. Usually faster and easier, so a new plant or animal can colonize an area more quickly. A mate does not have to be found so no travel is involved which saves energy. Less complex and more reliable. Can produce a large number of offspring very quickly. Requires two sets of sex cells (egg and sperm) usually produced by two parents that must get together to mate. Disadvantages Often slower, more complex, and less reliable that asexual reproduction. Examples Asexual Most animals reproduce sexually (fly, human, snake, frog). All flowering plants and those that make seeds reproduce sexually. (daffodil, grass, rose, oak tree). Fertilization may be internal (mammals, birds, reptiles) or external (frogs, fish). The new organisms are genetically identical to their parent and each other. Adaptation does not occur. Organisms with no variation that cannot adapt may become extinct. Plants and fungi that make spores (moss, ferns, mold, mushrooms). Single cells, which reproduce by binary fission or splitting in two (amoeba, bacteria). Budding (spider plant, hydra). Runners (grass, strawberries). Fragmentation (planarians). Regeneration (starfish). Reproduction: Asexual vs. Sexual ____________________ is important for the survival of all living _______________. Without a way to reproduce, __________ would come to an _________. There are two types of reproduction, _______________and _______________. Comparing sexual with asexual reproduction: Sexual Sexual reproduction involves Definition ____________________ so it typically requires the sex cells of ______ parents. Asexual Asexual reproduction involves ______ parent and results in an ___________ duplicate of an organism. The offspring will be _______________ from its parents. Genetic ___________ allows the species to ____________ to its surroundings. Advantages “Good” traits are passed on and strengthen the species which increases their _______________ __________. The fertilized egg can sometimes _______________ in adverse Usually faster and _______________, so a new plant or animal can colonize an area more _______________. A __________ does not have to be found so no travel is involved which saves _______________. Less _______________ and more _______________. Can produce a large number of _______________ very quickly. conditions. Requires _____ sets of sex cells (egg Disadvantages and sperm) usually produced by two _______________ to their parent and parents that must get together to each other. _______________. Often _______________, more _______________ does not occur. Organisms with no _______________ _______________, and less reliable that cannot adapt may become that asexual reproduction. _______________. Most _______________ reproduce sexually (fly, human, snake, frog). All _______________ plants and Examples The new organisms are genetically Plants and fungi that make _______________ (moss, ferns, mold, mushrooms). those that make _______________ _______________ cells, which reproduce reproduce sexually. (daffodil, grass, by binary fission or _______________ in rose, oak tree). two (amoeba, bacteria). Fertilization may be Budding (spider plant, hydra). _______________ (mammals, birds, Runners (grass, strawberries). reptiles) or _______________ (frogs, Fragmentation (planarians). fish). Regeneration (starfish). Reproduction: Asexual vs. Sexual ____________________ is important for the survival of all living _______________. Without a way to reproduce, __________ would come to an _________. There are two types of reproduction, _______________and _______________. Comparing sexual with asexual reproduction: Sexual Sexual reproduction involves Definition ____________________ so it typically requires the sex cells of ______ parents. Asexual Asexual reproduction involves ______ parent and results in an ___________ duplicate of an organism. The offspring will be _______________ from its parents. Genetic ___________ allows the species to ____________ to its surroundings. Advantages “Good” traits are passed on and strengthen the species which increases their _______________ __________. The fertilized egg can sometimes _______________ in adverse Usually faster and _______________, so a new plant or animal can colonize an area more _______________. A __________ does not have to be found so no travel is involved which saves _______________. Less _______________ and more _______________. Can produce a large number of _______________ very quickly. conditions. Requires _____ sets of sex cells (egg Disadvantages and sperm) usually produced by two _______________ to their parent and each parents that must get together to other. _______________. Often _______________, more _______________ does not occur. Organisms with no _______________ that _______________, and less reliable cannot adapt may become that asexual reproduction. _______________. Most _______________ reproduce sexually (fly, human, snake, frog). All _______________ plants and Examples The new organisms are genetically Plants and fungi that make _______________ (moss, ferns, mold, mushrooms). those that make _______________ _______________ cells, which reproduce reproduce sexually. (daffodil, grass, by binary fission or _______________ in rose, oak tree). two (amoeba, bacteria). Fertilization may be Budding (spider plant, hydra). _______________ (mammals, birds, Runners (grass, strawberries). reptiles) or _______________ (frogs, Fragmentation (planarians). fish). Regeneration (starfish).