Term
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Definition
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Term
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Definition
Cost of males
Cost of meiosis
Cost of mating |
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Term
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Definition
Break-up of favorable gene complexes
Some organisms are facultatively asexual |
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Term
| Costs of Sexual Reproducation |
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Definition
Time and effort spent in mating
Exposure to disease and predators |
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Term
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Definition
| Novel gene combinations via recombination. Can weed out mutations. |
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Term
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Definition
| Influences the degree to which a female can alter the sex ratio of her offspring |
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Term
| 3 Types of Sex Determination |
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Definition
Chromosomal
Environmental
Social |
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Term
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Definition
| Sex with heterozygous alleles for sex determine sex of offspring. |
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Term
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Definition
| Haploid males develop from unfertilized eggs. Diploid females develop from fertilized eggs. |
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Term
| Environmental Sex Determination |
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Definition
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Term
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Definition
| Depending on mating system, might be able to change sex. |
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Term
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Definition
| Parental strategies should evolve towards equal investment in offspring of the two sexes |
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Term
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Definition
| Maternal condition influences offspring investment. |
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Term
| Females in good condition do (3 things) |
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Definition
transfer competitive ability to sons more than daughters (e.g. through parental care)
have more offspring
produce more sons than daughters assuming that |
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Term
| Females in poor condition will produce |
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Definition
| More daughters than sons. |
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Term
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Definition
| Male siblings fight with each other for mates. |
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Term
| Local resource competition |
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Definition
| Offspring that stay near their birth site may compete with their parents for resources |
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Term
| Local resource enhancement |
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Definition
| Offspring of one sex delay disperal and remain at the natal site to help parents raise their siblings. |
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