University:
Eastern Kentucky University
Course:
BIO 100 | Introductory Biology
Academic year:

2022
Views:

451

Pages:

2
Author:

folclord7m

Ch 13.2 core content 1.The ease with which humans travel across the globe is likely to increase _____. -gene flow 2.Homologous pairs of chromosomes are lined up independently of other such pairs during _____. -metaphase I 3.Crossing over, resulting in an increase in genetic variation, occurs between _____. -nonsister chromatids of homologous chromosomes 4.In human gamete production there is an average of _____ crossover events per chromosome pair. -2-3 5.Which of these gametes contain one or more recombinant chromosomes? -B, C, F, and G 6.can you complete the map that reviews some key ideas of evolution? a. genetic variation b. Evolution c. Hardy-weinberg equilibrium d. Sexual reproduction e. Allele frequencies f. Genetic drift g. Adaptions 7.Which of the following is the most recent example of an evolutionary change in populations? - the development of pesticide-resistant insects 8.The relationship of the genome to an organism is the same as that of the _____ to a population. -gene pool 10.To help prevent the proliferation of antibiotic-resistant bacteria, you should __________. -take the full course of any antibiotics your doctor has prescribed 11.In evolutionary terms, an organism's Darwinian fitness is measured by its __________. -contribution to the gene pool of the next generation 12.According to current evolutionary theory, which of the following is true? -Populations are the units of evolution. 13.Imagine that a new population of humans is established on a new planet from ten randomly selected people in your biology class. Over thousands of years, the descendants of those ten people reproduce and prosper, but do not reflect well the diversity of humans on Earth. This change in the diversity of people on the new planet is an example of _____. -the founder effect 14.Which of the following is an example of natural selection that has been seen in our lifetime? -the evolution of antibiotic-resistant bacteria 15.The population of American bison used to number in the millions of animals. Hunting and other problems greatly decreased the number of bison to about 1,000 animals. Today, the numbers are recovering to estimates of more than 200,000 animals. This crash in the population of bison and recent recovery is an example of __________. -the bottleneck effect 16.Which of the following is a true statement? -Species with nucleotide sequences that match closely share a common ancestor. 17.A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than individuals with other characteristics is called _____. -natural selection 18.In recessive lethal diseases such as Tay-Sachs disease, carriers have one copy of the normal allele and one copy of the allele for the disease. Carriers are represented in the Hardy-Weinberg formula by __________. -2pq 19.According to the Hardy-Weinberg formula, the frequencies of alleles in a population will remain constant if _____ is the only process that affects the gene pool. -sexual reproduction 20.Which of the following statements about early ideas of evolution is true? -Fossil discoveries in the early 1800s convinced many naturalists that species are not fixed and can change over time. 21.Match each key term to the appropriate description. Terms may be used more than once. 1.gene flow 2.bottleneck effect 3.bottleneck effect 4.gene flow 5.sexual selection 6.founder effect