Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 4.2, Problem 1CC
Summary Introduction
To analyze:
Themicroscopy that can be used to observe viruses.
Introduction:
The technique of microscopy helps to identify micro-organisms and visualize various physiological features of the organism under study. Different types of microscopes are used for various purposes that allow easy detection and exhaustive study of the structure and properties of microbes.
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Question #3:
In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would
transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming
there was just one gene conferring gametophytic obligate apomixis, and that the two parents are
inbreds, what would be the consequences of such a cross if:
a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the parental cross.
b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non-
apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic
and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female
first (left side) in the…
Question #5:
Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The
genes show independent assortment. Recessive alleles at both loci are required for the facultative
apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C.
At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype.
A facultative apomict male, capable of producing viable pollen, was crossed with a sexually
reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic
ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following
temperatures*:
a) 15°C?
b) 25°C?
*for full credit, show crosses and genotypes where appropriate. Remember to position the
female first (left side) in the cross.
Type your answer here:
Chapter 4 Solutions
Principles of Biology
Ch. 4.1 - With regard to the origin of life, why are...Ch. 4.1 - Prob. 2CCCh. 4.1 - Prob. 3CCCh. 4.1 - Prob. 1BCCh. 4.1 - Prob. 4CCCh. 4.1 - Prob. 1TYKCh. 4.1 - Prob. 2TYKCh. 4.1 - Prob. 3TYKCh. 4.2 - Prob. 1CCCh. 4.2 - Prob. 1TYK
Ch. 4.2 - Prob. 2CCCh. 4.2 - Prob. 2TYKCh. 4.3 - Prob. 1BCCh. 4.3 - Prob. 1CCCh. 4.3 - Prob. 2BCCh. 4.3 - Prob. 1TYKCh. 4.3 - Prob. 2TYKCh. 4.3 - Prob. 3TYKCh. 4.4 - Prob. 1BCCh. 4.4 - Prob. 1CCCh. 4.4 - Prob. 1TYKCh. 4.4 - Prob. 2BCCh. 4.4 - Prob. 2TYKCh. 4.4 - Prob. 3TYKCh. 4.5 - What is the function of the nuclear lamina and the...Ch. 4.5 - Prob. 1BCCh. 4.5 - Prob. 2CCCh. 4.5 - Prob. 1TYKCh. 4.5 - Prob. 2TYKCh. 4.5 - Prob. 3TYKCh. 4.6 - What is the advantage of having a highly...Ch. 4.6 - Prob. 1BCCh. 4.6 - Prob. 2CCCh. 4.6 - Prob. 1TYKCh. 4.6 - Prob. 2TYKCh. 4.7 - Prob. 1TYKCh. 4.8 - Prob. 1CCCh. 4.8 - Prob. 2CCCh. 4.8 - Prob. 3CCCh. 4.8 - Prob. 4CCCh. 4.8 - Prob. 1TYKCh. 4.8 - Prob. 2TYKCh. 4.8 - Prob. 3TYKCh. 4.9 - Which of the following could be found in a...Ch. 4.9 - Prob. 2TYKCh. 4 - The cell theory states that all living things are...Ch. 4 - Prob. 2TYCh. 4 - Prob. 3TYCh. 4 - Prob. 4TYCh. 4 - Prob. 5TYCh. 4 - Prob. 6TYCh. 4 - Prob. 7TYCh. 4 - Prob. 8TYCh. 4 - Prob. 9TYCh. 4 - Prob. 10TYCh. 4 - Describe two specific ways that protein-protein...Ch. 4 - Explain how motor proteins and cytoskeletal...Ch. 4 - A principle of biology is that structure...Ch. 4 - Prob. 1CBQCh. 4 - Prob. 2CBQ
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