QUESTION 1 Selection can only operate on traits that are: sexually dimorphic. ph

Question

QUESTION 1

Selection can only operate on traits that are:

sexually dimorphic.

phenotypically plastic.

variable.

heritable.

QUESTION 2

Sexual selection:

is not a subset of natural selection and involves different mechanisms.

is a subset of natural selection that operates during mating.

is a subset of natural selection that operates throughout the life cycle.

operates only on males, not females.

QUESTION 3

Standardized data has a mean o......f and a standard deviation of ....... (Use numbers, not letters / words when filling in the blanks)

1 points

QUESTION 4

Is there variation in claw size among male crayfish that was observed in your lab section ? Does this mean that there is or that there is not scope for selection to operate in the "population" of crayfish?

a negative slope in Part 2 mean?

smaller lizards sire more offspring than larger lizards

body size is not subject to selection

the same thing as a positive slope

a negative slope is not possible

QUESTION 5

Indicate that there is variation in the size of the sexually-selected trait among males in the simulated population.

Are standardized, meaning that they have an average of 0 and a standard deviation of 1.

Come from a single population.

All of the above

QUESTION6

Compare the data in Fig. 5 with those from Fig. 3 from Part 2 of the lab. In which population was the magnitude of directional selection on the male trait larger, the natural population (corresponding with Fig. 3) or the simulated population?

There is no selection operating in either population.

The magnitude of directional selection was the same in the natural and the siimulated populations.

The magnitude of directional selection was larger in the natural population of lizards examined in Part 2 of the lab.

The magnitude of directional selection was larger in the simulated population examined

QUESTION 7

Run the file "main.R" without changing any of the code. Highlight all the code and click 'Run'. New figures will be generated. The magnitude of selection in our simulated population is now and the average selection gradient across all simulated populations?

Q8

Which parameter change (e.g. your changes to the sex ratio, the number of matings, or population size) had the largest impact on the strength of sexual selection in the simulated populations? How do you know?

sexually dimorphic.

phenotypically plastic.

variable.

heritable.

Explanation / Answer

Question 1 ; selection act on the traits that are Heritable .

Question 2; Sexual selection means; It is a subset of the natural selection which operates during the mating

Question 3; Standadized data has mean of 0 and standared deviation of the 1.

Questio4;   Body size is the not subject to selection , All the above .

Question 8; Th change in the number of the matings will be having the larger impact on the natural slelction as the number of the matings will change the sex ratio in a population and indirectly effecting the population size .

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