Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 11, Problem 2DAA
HeLa Cells Are a Genetic Mess HeLa cells can vary in chromosome number. Defects in proteins that orchestrate cell division result in descendant cells with too many or too few chromosomes, an outcome that is one of the ha1lmarks of cancer cells. The panel of chromosomes in FIGURE 11.9, originally published in 1989, shows all of the chromosomes in a single metaphase HeLa cell.
FIGURE 11.9 Karyotype of HeLa showing chromosomes in one cell.
How many extra chromosomes does this cell have, compared to a normal human body cell?
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You are studying the effect of directional selection on body height in three
populations (graphs a, b, and c below).
(a) What is the selection differential? Show your calculation. (2 pts)
(b) Which population has the highest narrow sense heritability for height?
Explain your answer. (2 pts)
(c) If you examined the offspring in the next generation in each population,
which population would have the highest mean height? Why? (2 pts)
(a)
Midoffspring height (average height of offspring)
Short
Short
Short
Short
(c)
Short
(b)
Short
Tall
Short
Tall
Short
Short
Tall
Midparent height
(average height of
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
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You are studying a population of 100 flowers that has two alleles at a locus for
flower color, blue (B) and green (G). There are 15 individuals with the BB
genotype, 70 individuals with the BG genotype, and 15 individuals with the GG
genotype.
(a) What are the allele frequencies of B and G in the starting population? Show
your calculations. (2 pts)
(b) Is this population in Hardy-Weinberg equilibrium? Show your calculations. (3
pts)
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Chapter 11 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - HeLa Cells Are a Genetic Mess HeLa cells can vary...Ch. 11 - Prob. 1SQCh. 11 - A duplicated chromosome has how many chromatids?Ch. 11 - In the diagrams of the nucleus shown below, fill...Ch. 11 - Homologous chromosomes _______. a. are inherited...Ch. 11 - Most healthy body cells spend the majority of...Ch. 11 - The spindle attaches to chromosomes at the...Ch. 11 - Which is not a stage of mitosis? a. prophase b....
Ch. 11 - In intervals of interphase, G stands for ______....Ch. 11 - Interphase is the part of the cell cycle when...Ch. 11 - After mitosis the chromosome number of a...Ch. 11 - Cytoplasm of a plant cell divides by the process...Ch. 11 - Prob. 12SQCh. 11 - Match each stage with the events listed. _____...Ch. 11 - Prob. 14SQCh. 11 - Prob. 15SQCh. 11 - When a cell reproduces by mitosis and cytoplasmic...Ch. 11 - How is the human life cycle related to the cell...Ch. 11 - The photo on the left shows an early frog embryo...Ch. 11 - The cell above is a lung cell of a salamander. In...Ch. 11 - The eukaryotic cell at left is in the process of...Ch. 11 - Exposure to radioisotopes or other sources of...
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