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File Edit View History Bookmarks Window Help Take Test Mutiple This test allows multiple athemphs Force This test can be saved and resumed later Question Complietion Status Moving to another question wil save this rmponse. Question1 2 points Save Answer Consider a population of bleds in which there are only 10 females. The numbers of viable ofhspring produced by each Semale this your ware: 5. 3. 1,2 was the tecundity in this population this year? (please give your anseer to one decimal place) Quetion 1 of 20 reponse. Moving to irceer oetion wil save th 6 3 4 2 K L NIM

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Answer 2 : Thales

Thales the Milesian, was a pre-Socratic Greek philosopher. He believed in naturalistic explanations of the world unlike the philosophers is those times who thought lightnings and thunder are action of Gods and Supernatural energies. It is said that he also believed that life originated from water.

Answer 3 : Directional Selection.

There are 3 types of selection; stabilizing, disruptive and directional.

Stabilizing Selection: A type of selection where average phenotype is favored.

Disruptive selection : A type of selection which is against the average phenotype; it divides the population into two extremes, where there will be more individuals of both extremes and less in the middle.

Directional Selection: A type of selection in which an extreme phenotype is favored over other phenotypes.This causes the allele frequency to shift in the direction of that phenotype with time.

Answer 4 :Distribution of fitness effects (DFE)

The distribution of fitness effects (DFE) is an important aspect which helps determining the path of evolution. Since mutations are the major source of evolutionary changes, it controls the rate of adaptation of a new trait in the environment. In order to find out the consequences of these mutations, it is necessary to understand the shape of the DFE. It is usually done statictically comparing frequencies and relative fitness of a trait after induction of mutation.

Answer 5 : Trade-off

As the number of offsprings increases there is a noticable decrease in their number to weight ratio.

Offspring birth size is influenced by both the phenotype of the mother and genes of the offspring. Maternal effects for birth size includes numerous factors that influence nutrient supply to the foetus and are expected to have a substantial effect on offspring birth size. So, more the number of offsprings less nutrients will reach to each one,thus effecting the birth size.

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