Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 23, Problem 2SQ
The relative numbers of different genes (alleles) in a gene pool change as a result of four processes of microevolution: _________, _________, _________, and _________.
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Scientists at Bikini Bottoms have been investigating the genetic makeup of the organisms in this community. Use the information provided and your knowledge of genetics to answer each question.
For each genotype below, indicate whether it is heterozygous (Hetz) OR homozygous (Homz).
TT _____ Bb _____ DD _____ Ff _____ tt _____ dd _____
Dd _____ ff _____ Tt _____ bb _____ BB _____ FF _____
Which of the genotypes in #1 would be considered purebred? ________________________________
Which of the genotypes in #1 would be hybrids? __________________________________________
Sixteen percent of a population is unable to taste the chemical PTC. These non-tasters are recessive for the tasting gene.
What percentage of individuals in the population are tasters? ______________
What is the frequency of the dominant and recessive allele? _____________________________
What percentage of the population are heterozygous for the trait? ___________________
Although humans and nematodes (round worms) have approximately the same number of coding genes, humans exhibit greater phenotypic complexity.
This illustrates the ______________________ paradox which can be partly explained by_______________________.
Group of answer choices
G value, differences in gene regulatory networks (e.g., # transcription factors)
C-value, cell size and transposable elements
G-value, cell size and transposable elements
C-value, differences in gene regulatory networks (e.g., # transcription factors)
Chapter 23 Solutions
Human Biology (MindTap Course List)
Ch. 23 - Prob. 1RQCh. 23 - As shown in Figure 23.25, there is considerable...Ch. 23 - Prob. 3RQCh. 23 - Prob. 4RQCh. 23 - Prob. 5RQCh. 23 - Prob. 6RQCh. 23 - Prob. 1SQCh. 23 - The relative numbers of different genes (alleles)...Ch. 23 - A difference in survival and reproduction among...Ch. 23 - The fossil record of evolution correlates with...
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- True or False: Higher eukaryotic organisms inherit two alleles for each trait – one paternal and one maternal. Question options: False Truearrow_forwardThe magnification of genetic drift as a result of natural events or catastrophes is _____; _____ is the flow of alleles in and out of a population due to the migration of individuals or gametes.arrow_forwardIn a certain population, 64% of the individuals express the donminant phenotype (e.g. tall pea plant). What percentage of these individuals should be heterozygous according to Hardy-Weinberg equlibrium? Edit View Insert Format Tools Tablearrow_forward
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