Term
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Definition
| two sexes, male and female, in separate individuals |
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Term
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Definition
| both sexual functions in the same individual |
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Term
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Definition
•Adult barnacles are sessile filter feeders
•Most barnacles are simultaneous hermaphrodites
•Barnacles have the longest penis relative to body size, about 10 times its body height!
•When a barnacle is ready to lay eggs it releases pheromones to alert a neighbor to extend its penis.
•After fertilization, the barnacle broods its eggs and releases them as larvae.
•One barnacle may produce 10,000 eggs! |
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Term
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Definition
•Anthias hatch as females; coloration is pale
•After one year, some start switching to male
•Male coloration is vivid red
•Males compete for access to females
•Males mate with many females (polygyny)
•Males defend females in their mating group |
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Term
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Definition
| Has both sexual functions in the same plant. 72% of all plants are perfect |
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Term
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Definition
| separate male and female flowers on the same plant |
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Term
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Definition
| separate sexual functions in separate individual plants |
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Term
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Definition
| pumpkin,squash, monoecious |
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Term
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Definition
| Diecious,unisexual, plants are male or female |
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Term
| sexual reproduction involves... |
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Definition
| meiosis, syngamy(fusion of gametes), creation of new gene combinations |
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Term
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Definition
| self-reproduction with no help from another species |
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Term
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Definition
| females produce without the use of sperm and all female species evolves |
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Term
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Definition
| never involves syngamy, produces buds(invertebrates), and cloning can occur |
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Term
| Relative cost of asexual rep. |
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Definition
| its energetically cheap, off. with traits like parents, off. successful |
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Term
| Relative cost of sexual rep. |
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Definition
| mating is risky and costly, cost of meiosis(parents only contribute half of genes) |
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Term
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Definition
| organisms require variation to allow continual change to stay one up against pathogens, predators and competitors. |
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Term
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Definition
| a male and female of a single pair bond |
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Term
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Definition
| one gender mates with many of the other sex |
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Term
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Definition
| one male with many females |
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Term
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Definition
| one female with many males (rare) |
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Term
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Definition
| many males mate with many females |
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Term
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Definition
| is favored when male can contribute substantially to care of young |
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Term
| Male red-winged blackbirds |
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Definition
| polygynous males use visual and auditory expressions to attract females for mating. females use polygamy to choose high quality territories |
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Term
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Definition
Breeds in summer in Arctic tundra; winters at sea off coasts of Africa and South America
Females: brighter plumage, 1st on tundra, compete for nesting sites; mate w/multiple males
Males: duller plumage, each male has 1 nest, carries out all parental care (incubate and feed chicks),Females guard males during nesting period |
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