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Cell, Organisms And Systems > Evolutionary Choices: Sex and Life Choices > Flashcards

Evolutionary Choices: Sex and Life Choices Flashcards

1
Q

Life History Theory

A

Study of evolutionary strategies affecting reproduction.

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2
Q

Sexual Reproduction

A

Reproduction involving the combination of genetic material.

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3
Q

Genetic Variability

A

Diversity in genetic traits among offspring.

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4
Q

Costs of Sexual Reproduction

A

Energy and risks associated with finding mates.

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5
Q

Benefits of Sexual Reproduction

A

Increased adaptability through genetic recombination.

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6
Q

Asexual Reproduction

A

Reproduction without the fusion of gametes.

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7
Q

Bdelloid Rotifers

A

Asexual organisms lacking meiosis for 30 million years.

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8
Q

Hermaphroditism

A

Organisms possessing both male and female reproductive organs.

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9
Q

Iteroparous

A

Species reproducing multiple times over their lifespan.

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10
Q

Semelparous

A

Species reproducing only once in their lifetime.

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11
Q

Trade-offs

A

Balancing energy between growth, reproduction, and survival.

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12
Q

Life History Traits

A

Characteristics influencing reproductive strategies and survival.

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13
Q

Survivorship Curves

A

Graphs showing survival rates at different ages.

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14
Q

Type I Survivorship

A

High survival in early life, rapid decline later.

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15
Q

Type II Survivorship

A

Constant mortality rate throughout life stages.

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16
Q

Type III Survivorship

A

High mortality early, low rates for survivors.

17
Q

Male Seahorses

A

Males incubate eggs internally to produce live young.

18
Q

Coho Salmon Maturity

A

Males mature as jacks or hooknoses based on timing.

19
Q

Chromosomal Sex Determination

A

Sex determined by specific chromosome combinations.

20
Q

Temperature Sex Determination

A

Environmental temperatures influence sex development.

21
Q

Protandrous

A

Species where males can change to females.

22
Q

Protogynous

A

Species where females can change to males.

23
Q

Atlantic Cod

A

Type III species with high fecundity and longevity.

24
Q

Fecundity

A

Reproductive capacity of an organism.

25
Q

Natural Selection

A

Process favoring traits that enhance reproductive success.

26
Q

Darwinian Fitness

A

Ability to survive and reproduce in a specific environment.

27
Q

Sex Ratio

A

Proportion of males to females in a population.

28
Q

Life History Strategies

A

Patterns of growth, reproduction, and survival in species.

29
Q

Age-Specific Mortality

A

Mortality rates varying with age in populations.

30
Q

Parental Care

A

Investment of resources by parents in offspring survival.

Cell, Organisms And Systems (16 decks)

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