B are weakly selected C are optimized by selection acting across the entire lifetime lifetime reproductive success D all of the above 2 A life table A gives a statistical summary of fitness as the sum of lx ID: 643642
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Slide1
1) Life history traits
A) have higher heritability than most morphological traits
B) are weakly selected
C) are optimized by selection acting across the entire lifetime (lifetime reproductive success)
D) all of the aboveSlide2
2) A life table
A) gives a statistical summary of fitness as the sum of lx*
mx
across all ages
B) can be used to calculate age specific fitness
C) can be used to calculate the fitness effects of mutations that act late in life
D) gives insight into why we grow old
E) all of the aboveSlide3
3) How does high extrinsic mortality alter life history traits
A) it favors early reproduction
B) it favors large numbers of small offspring
C) it allows late acting deleterious mutations to accumulate
D) it favors early acting beneficial alleles even if the same alleles are deleterious later in life
E) all of the aboveSlide4
4) The Smith-
Fretwell
model of optimal offspring size (from the parent point of view) assumes
A trade-off between size and survivorship of offspring
That larger offspring survive better than smaller ones
That more offspring are better, even if their survival chances are worse
That organisms understand evolutionary biology and can adjust their offspring sizeSlide5
5) senescence
A) occurs because we wear out
B)
reflects a trade off between maintenance and reproduction
C) affects the lx but not the
mx
component of fitness
D) uh, I can’t remember because I’m getting old