For natural selection to affect tail length in birds which of the following must be true? O All of these Tail length must, at least in part, "run in families," i.e. be similar among related individuals Tails must be of different lengths in individuals O None of these needs to be true

For natural selection to affect tail length in birds which of the following must be true? O All of these Tail length must, at least in part, "run in families," i.e. be similar among related individuals Tails must be of different lengths in individuals O None of these needs to be true

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter19: Population Genetics And Human Evolution

Section: Chapter Questions

Problem 19QP: Measuring Genetic Diversity in Human Populations The theory of natural selection has been summarized...

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Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth. Human evolution is an outcome of interaction among the following processes:

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Question 10 The process of Natural Selection depends on Variability in the traits from one species to another Every member of a species surviving All of the above The environment staying the same over generations Inheritability of the traits withina population
QUESTION 2 A character is a heterozygous organism an observable physical feature O a physical feature with only one allele a variation in an observable physical feature
QUESTION 21 The law that states genetic traits are inherited independently of one another is called: O random genetic drift O genetic evolution O genotype O independent assortment QUESTION 22 Which of the following phenomena is the only one that produces wholly new genetic traits? O random mating O genetic drift O gene flow mutation QUESTION 23 New species arise when: O two populations of the same species become reproductively isolated in different environments for a significant period of time O adaptive mutations suddenly occur in the population at an accelerated rate O individuals of two different species interbreed O all of their evolutionary predecessors become extinct
Question 18 What is shown in this illustration? - bil strongly curved .. .ibis bill elongated - bill uniform in width.... -...... heron bill straight bill greatly widened at end..... spoonbill bill straight cardinal bill not elongated bill strongly hooked. -eagle cladogram binomial nomenclature dichotomous key Ophyla Ophylogenetic tree
QUESTION 3 Darwin's theory of natural selection explains: O The way life began. O The way evolution works at the genetic level. The way dinosaurs became extinct. O That traits within a breeding population that are adaptive to specific environmental circumstances become more numerous in that population over time.
Question 8 Which of these statements is correct? Genetic variation is not random and natural selection is random. Both natural selection and genetic variation are directed processes. Genetic variation is random and natural selection is not random. Both genetic variation and natural selection are random processes. Natural selection is directed and genetic variation is not directed.
Question 1 Choose the following scenario that is best matched to the idea of evolution by natural selection. 2% of individuals in a population die in a flood; the population remains large and there is no apparent pattern to the deaths O A group of birds grow to different sizes depending on their diet and their overall size is not heritable. A snowstorm arrives killing smaller birds. Some bears are born with long, sharp claws for digging tubers (roots) out of the ground and eating them. Claw length "runs in families" with some families exhibiting longer claws. A late spring kills off many bears with short claws A person experiences wrinkled fingertips in the water, but they are smooth when not in the water
QUESTION 2 Which statement about the genetic basis of races in humans is correct? You are more closely related to all people of your own race than you are to individuals of different races Differences in health outcomes among members of different racial groups are primarily due to genetic differences between these groups Racial differences only account for about 3-5% of genetic variation in humans Different racial groups are separated by hundreds of thousands of years of evolution
Question 2U Which is NOT an example of homoplasious characters? A More than one of these. B Bats and birds are both monophyletic groups with wings. Many species of insects, amphibians, and fish have evolved red and yellow warning coloration to advertise their poisonous skin or organs. Sharks and dolphins have fins and fuselage-shaped bodies, despite sharing a distant common ancestor. E) The amniotic egg is a synapomorphy of terrestrial vertebrates, but has been lost in many groups. Do you have additional content? You can add text, images, and files that support your answers. Last saved 1:07:04 PM Save and Clc P Type here to search 11 Home F9 End F10 PgUp Mx PrtScn F6 F7 F8
Question 23 What is the MOST LIKELY explanation for why there is variation in aging across different species? O The strength of selection is determined by aging O Trade-offs only apply to some species O Mutation accumulation theory applies to some species while antagonistic pleiotropy applies to others O Different species suffer different levels of background (i.e., extrinsic) mortality
Question 2 Differential Survivability O Plays a significant role in adaptation and evolution O Means that not everybody makes it O Results in the next generation being more like the survivors O Results in the next generation being less like those who didn't survive O All of the above
Question 4 Which of these examples does not describe an adaptation? The arctic fox has a white coat in winter and a brown coat in summer. O Exercise and training make Sidney Crosby a great hockey player. Rounded owl feathers make them silent flyers. OA stick insect looks like a piece of stick. Hummingbirds migrate south from Canada in the fall.