Explain what it is that selection is actually acting on and how such variation is distributed throughout a population (gene pool) (blending vs. independent assortment).
These variations come in population by mutations, immigration , emigration etc as new gene or characteristics are added and some are lost. Natural selection act on these . According to blending theory ,offspring have intermediate characteristics to their parents but environment also affect those offspring characteristics and overall population gene pool is influenced by natural selection , variation ,immi immigration and emigration.
Explain what it is that selection is actually acting on and how such variation is distributed...
Explain what it is that selection is actually acting on and how such variation is distributed throughout a population (gene pool) (blending vs. independent assortment). Dawkins suggests that selection is powerful yet unconscious of it's actions ("without any understanding at all"). He uses a variety of examples to highlight how various organisms drive selection, sometimes consciously and sometimes unconsciously, by mediating the breeding process. Using one of the examples explain how some organisms unconsciously drive the selection of others.
Explain what it is that selection is actually acting on and how such variation is distributed throughout a population (gene pool) (blending vs. independent assortment). Dawkins suggests that selection is powerful yet unconscious of it's actions ("without any understanding at all"). He uses a variety of examples to highlight how various organisms drive selection, sometimes consciously and sometimes unconsciously, by mediating the breeding process. Using one of the examples explain how some organisms unconsciously drive the selection of others.
1. What happens to the within-group and between-group genetic variation of the population when gene flow occurs in the population? 2. What happens to the within-group and between-group genetic variation of the population when genetic drift occurs in the population? 3. When only one type of allele at a locus is found for a gene, what is this called? 4. What happens to a genetic variation within a population when natural selection is acting on a population? 5. What happens...
In stabalizing selection : 1. How is the relative fitness of genotypes affected when selection is acting against homozygotes? 2. What effect does it have on the mean phenotype and genotypic/phenotypic variation within a population? In disruptive selection 1. How is the relative fitness of genotypes affected when selection is acting against heterozygotes? 2. What effect does it have on the mean phenotype and genotypic/phenotypic variation within a population? How does selection typically affect genotypic/phenotypic variation between populations? How do...
Natural selection can move a population beyond its initial range of variation because a. sudden increases in mutation rates are often induced by selection. b. under genetic drift there is less variation and under selection there is more. c. selection can expose hidden variation. d. selection usually increases the randomness of mating, thus increasing variation. Which of the following is true of continuously varying characters? a. They allow for blending of the effects of two genes, the blended version passed...
Genetic Variation Explain three cellular and /or molecular mechanisms that introduce variation into the gene pool of a plant or animal population.
1. Genetic variation _____. A. is created by the direct action of natural selection B. must be present in a population before natural selection can act upon the population C. arises in response to changes in the environment D. tends to be reduced by when diploid organisms produce gametes 2. What is a genetic correlation? A. When selection favoring alleles for one trait causes a correlated but suboptimal change in an allele for another trait. B. When two offspring inherit...
1. what is the nuances behind the argument that all living birds are actually dinosaurs 2. Explain the different lines of evidence in support of the theory of evolution 3. What is natural selection? 4. How does natural selection differ from artificial selections? 5. What is a ring species? 6. Why might Ensatina Salamanders not like to live in the central valley? 7. What is the relationship of variation and natural selection? 8. What is variation? How does a population...
What is responsible for the genetic variation observed among offspring from the same parents? Select one: a. Independent assortment b. Gene linkage c. Recessive alleles d. Incomplete dominance
What is the basic idea of natural selection? What is evolutionary adaption? Describe the five types of evidence of evolution. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. What kinds of adaptations did Darwin observe in the Galápagos finches? What are the two observations that formed that basis of Darwin’s theory of natural...