Hi I need the answer to this question please Thank you 2. Using the Galapagos finches as an example, answer the following questions:I. Why are there only three species of finches on the mainland of South Americaand up to 16 different species of finches on the Islands?II. Describe the mechanism by which the original population of finches arrived onthe islands.III. An original population of finches on Daphne Island is polymorphic when it comesto beak sizes. (this population feeds on seeds of varying sizes from differentspecies of plants). At first the beak size variations and their main food sourcewere as follows:Small beak/small seeds 25%Medium beak/medium seeds 50%Large beak / large 25%a. Draw a graph of the original population and their beak size/percentage.(Assume this is the original population with plenty of food sources for each).b. A 10-year drought hit the island which kills the plants that produce both thesmall seeds and the medium size seeds. Describe the allele frequency shiftand draw a graph to show the difference in the beak sizes at the end of the tenyears. Draw a graph representing your hypothesis.What type of selection would this be?c.

INTRODUCTION Darwin's finches are a classical example of an adaptive radiation. Their common…

Using the Galapagos finches as an example, answer the following questions: I. Why are there only three species of finches on the mainland of South America and up to 16 different species of finches on the Islands? II. Describe the mechanism by which the original population of finches arrived on the islands.

Using the Galapagos finches as an example, answer the following questions: I. Why are there only three species of finches on the mainland of South America and up to 16 different species of finches on the Islands? II. Describe the mechanism by which the original population of finches arrived on the islands.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter24: Systematics And Phylogenetics: Revealing The Tree Of Life

Section: Chapter Questions

Problem 8TYK: When systematists study morphological or behavioral traits to reconstruct the evolutionary history...

See similar textbooks

Similar questions

If a population of skunks includes some individuals with stripes and others with spots, would you describe the variation as quantitative or qualitative?
2) In a particular island, the environment is semi-arid. There is a lizard population with a lot of variation for color. Normally, the light sandy color and golden colored lizard flourished because they escaped predation, while others were barely surviving. However, in recent years, a lot of rain has brought about a lot of vegetation. Which variation of lizard will now flourish in the area? * A) white B) Brown C) Green D) Red
1. Which of these populations has all the characteristics needed to evolve by natural selection? A. a population of lizards may be brown or red. The temperature of the eggs determines the color of the baby lizards, and a brown parent lizard is equally likely to give birth to either color of offspring. B. a population of spiders includes individuals that build their webs in triangle shapes and others that build their webs in round shapes. They inherit their web-building strategies from their parents and all shapes are equally successful at catching insects. C. some gazelles are capable of running faster than others, a skill that is partially genetic Faster gazelles tend to live longer and have more offspring. A. Population A B. Population B C. Population C 2. Your friend asks you "If evolution is real, why aren't humans perfectly adapted by now! why do people still get heart disease and cancer and die?" Which of these would be an accurate response you could give? A. Evolution only…
1. Which among the following is NOT a principle of natural selection? a. The DNA sequence of the organism will change. b. The characteristics of organisms are inherited or passed from parent to offspring. c. Offspring vary among each other about their characteristics, and those variations are inherited. d. More offspring are produced than can survive. 2. Tawilis is a freshwater sardine endemic only in the Taal Lake in Batangas province. After several eruptions of the Taal volcano in the 21st century, the sardine population mentioned above rapidly dropped up to 82%. What best describe this scenario? a. mutation b. migration c. natural selection d. genetic drift
1.A small group of turtles float on a log to an island and establish a new population there. How do you expect the genetic diversity of the island turtles to compare to genetic diversity of the mainland turtle population they originated from? Group of answer choices A. Genetic diversity should be similar, since they are the same species. B. Genetic diversity should be higher for the island turtles, because the new environment will produce new alleles. C. Genetic diversity should be lower for the island turtles, since the island turtles represent a small sample of the genetic diversity from the mainland turtles. 2.If the probability of a turtle having a brown shell is 3/4 and the probability of a turtle having a bumpy shell is 1/4, what is the probability of a turtle that has a shell that is both brown andbumpy? Group of answer choices A. 3/16 B. 3/8 C. 3/4 D. 1/2 3. A Drosophila gene is on the X chromosome, and recessive mutations in this gene cause white eye color…
9) This chart shows the beak length of a population of finches in the Galapagos. The island was faced with a five year drought that made it difficult for birds to get water. If natural selection occurs, how would you predict the bird beak lengths to change? A) Only those with shorter beaks would survive. B) The population would not really change much. C) Only those with the longest beaks would survive. D) Those with medium-long beaks would increase most. Not Graded
#2: Which of the following sexual selection hypotheses would apply to a species in which elaborate male traits have evolved because females have preferences for these traits, and female preferences have spread through the population simply because they are genetically correlated with the preferred male traits? (chose one answer) a. Chase-away sexual selection b. Indicator "good genes" model c. Fisherian "runaway" sexual selection d. Antagonistic co-evolution e. The parasite hypothesis
1. What are the reasons why Philippine tarsiers cannot be found in Cebu despite it being near to Bohol, instead it found in Samar, Leyte, and Mindanano? Discuss the reason and explain it. Do not just copy it from somewhere, please.
1) In allopatric speciation, geographic separation of two populations a.reduces the relative fitness of hybrid offspring. b.is sufficient for speciation to occur. c.allows gene flow between them. d.inhibits gene flow between them.
The phenomenon in which chance events cause unpredictable changes in allele frequencies is called: a. gene flow. b. genetic drift. c. inbreeding. d. balanced polymorphism. e. stabilizing selection.
An Eastern European immigrant carrying the allele for Tay-Sachs disease settled in a small village on the St. Lawrence River. Many generations later, the frequency of the allele in that village is statistically higher than it is in the immigrants homeland. The high frequency of the allele in the village probably provides an example of: a. natural selection. b. the concept of relative fitness. c. the HardyWeinberg genetic equilibrium. d. phenotypic variation. e. the founder effect.
In the model of allopatric speciation, the geographical separation of two populations: a. is sufficient for speciation to occur. b. occurs only after speciation is complete. c. allows gene flow between them, d. reduces the relative fitness of hybrid offspring. e. inhibits gene flow between them.