An Introduction To Evolution And Population Genetics - Principles of Biology | Biology+

Course

Introductory Biology

Study Pack

Set 1: An Introduction to Biology

Set 2: The Chemical Basis of Life I: Atoms, Molecules, and Water

Set 3: The Chemical Basis of Life II: Organic Molecules

Set 4: General Features of Cells

Set 5: Membrane Structure, Transport, and Cell Junctions

Set 6: Energy, Enzymes, and Cellular Respiration

Set 7: Photosynthesis

Set 8: Cell Communication

Set 9: Nucleic Acid Structure, DNA Replication, and Chromosome Structure

Set 10: Gene Expression at the Molecular Level

Set 11: Gene Regulation

Set 12: Mutation, DNA Repair, and Cancer

Set 13: The Eukaryotic Cell Cycle, Mitosis, and Meiosis

Set 14: Patterns of Inheritance

Set 15: Genetics of Viruses and Bacteria

Set 16: Genetic Technology

Set 17: Genomes, Repetitive Sequences, and Bioinformatics

Set 18: Origin and History of Life

Set 19: An Introduction to Evolution and Population Genetics

Set 20: Origin of Species and Macroevolution

Set 21: Taxonomy and Systematics

Set 22: Microorganisms: The Archaea, Bacteria, and Protists

Set 25: Animal Diversity: Invertebrates

Set 26: Animal Diversity: Vertebrates

Set 27: An Introduction to Flowering Plant Form and Function

Set 28: Flowering Plants: Plant Behavior

Set 29: Flowering Plants: Nutrition and Transport

Set 30: Flowering Plants: Reproduction

Set 31: Animal Bodies and Homeostasis

Set 32: Neuroscience I: Structure, Function, and Evolution of Nervous Systems

Set 33: Neuroscience II: Sensory Systems

Set 34: Muscular-Skeletal Systems

Set 35: Digestive Systems and Nutrition

Set 36: Circulatory Systems

Set 37: Respiratory Systems

Set 38: Excretory Systems and the Homeostasis of Internal Fluids

Set 39: Endocrine Systems

Set 40: Animal Reproduction and Development

Set 41: Immune Systems

Set 42: Animal Behavior

Set 43: Ecology and the Physical Environment

Set 44: Population Ecology

Set 45: Community Ecology

Set 46: Ecosystem Ecology

Set 47: Biodiversity and Conservation Biology

Set 19 An Introduction To Evolution And Population Genetics

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Set 19 An Introduction To Evolution And Population Genetics

(Multiple Choice)

Free

What is true of a fossil that is classified as a "transitional form"?

A)It has all of the traits of its ancestors and all of the traits of its descendants.
B)It has some of the traits of its ancestors and all of the traits of its descendants.
C)It has all of the traits of its ancestors and some of the traits of its descendants.
D)It has some of the traits of its ancestors and some of the traits of its descendants.

Answer

(Multiple Choice)

Free

Peter and Rosemary Grant study natural selection in finches on the Galápagos Islands.They have hypothesized that dry conditions produce larger seeds and may result in larger beaks in succeeding generations of finches.The figure below shows their data from 1976 and 1978.The y-axis is the number of birds measured and the x-axis is the beak depth.Do their data support their hypothesis and why?

Peter and Rosemary Grant study natural selection in finches on the Galápagos Islands.They have hypothesized that dry conditions produce larger seeds and may result in larger beaks in succeeding generations of finches.The figure below shows their data from 1976 and 1978.The y-axis is the number of birds measured and the x-axis is the beak depth.Do their data support their hypothesis and why? A)Yes;because there were more birds measured in 1978 after the drought,therefore they must have been able to get food and reproduce. B)Yes;because the average beak depth of birds in the population increased from 8.8mm in 1976 to 9.8mm in 1978. C)No;because even though more birds were measured in 1978,the beak size of the upper range was smaller. D)No;because in 1976,before the drought,the largest beak depth was still 11.3mm. E)No;more data would be necessary to show a support of their hypothesis.

A)Yes;because there were more birds measured in 1978 after the drought,therefore they must have been able to get food and reproduce.
B)Yes;because the average beak depth of birds in the population increased from 8.8mm in 1976 to 9.8mm in 1978.
C)No;because even though more birds were measured in 1978,the beak size of the upper range was smaller.
D)No;because in 1976,before the drought,the largest beak depth was still 11.3mm.
E)No;more data would be necessary to show a support of their hypothesis.

Answer

(True False)

Free

According to Thomas Malthus,food supplies tend to increase linearly while populations have the potential to increase exponentially,which means that resources will limit population growth.

Answer