Darwin’s ‘syllogism’ consists of five parts; which ones are needed to explain phenotypic evolution by drift?
Added by James C.
Step 1
** Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 81 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Darwin broke the process of evolution by natural selection into four criteria, or postulates: 1) Populations vary in their traits, some of which are heritable. 2) Many offspring are produced that can survive, and individuals with certain traits are more likely to survive. 3) Populations do not vary in their units, some of the differences are not heritable, and offspring are produced that can survive. 4) Populations vary in their traits, some of the differences are not heritable, and individuals with certain traits are more likely to survive.
Adi S.
41. The fossil record often includes extinct representatives that resemble extant (living ) species in the same geographic area. How does this pattern support the theory of evolution by natural selection? A) It is evidence of the law of succession. B) It is evidence that Lamarck was right: Species become more complex over time. C) It is evidence of Aristotle's great chain of being. D) It doesn't support the theory of evolution 42. The Gill pouches present during development in embryos of chickens, humans, and house-cats are an example of: A) the inheritance of acquired characters B) convergent evolution developmental homology C) developmental homology D) developmental analogy E) All of the above 43. Genetic drift results in nonrandom fluctuation in allele frequencies within a population between generations. A = TRUE B = FALSE 44. Genetic drift results from A) errors in meiosis and meiotic drive B) unequal reproductive output of individuals in the population C) both A and B D) natural selection for improved alleles E) sampling variation in the genotypes of gametes produced 45. Genetic drift and natural selection cannot take place at the SAME time in a population. A = TRUE B = FALSE 46. The end result of genetic drift is fixation of one allele per locus in a population. A = TRUE B = FALSE 47. The magnitude of genetic drift (as measured by the variance in allele frequencies between generations) decreases with increased population size A = TRUE B = FALSE 48. Genetic drift can occur at more than one locus simultaneously in a population. A = TRUE B = FALSE 49. Genetic drift is more likely to lead to the fixation of a recessive allele than a dominant allele. A = TRUE B = FALSE 50. Three populations differ in the number of individuals they contain: Population 1 = 42, Population 2 = 175 and Population 3 =725 . In which population would genetic drift be expected to be the greatest ? A) 1 B) 2 C) 3 D) 1 = 2 = 3 E) 1 < (2 = 3)
Madhur L.
Critically evaluate the following statements: (i) "Natural selection changes populations, not individuals"; and (ii) "Natural selection is non-random but not progressive".
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD
