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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Textbook Question
Chapter 22, Problem 5TY
Which of the following explanations of multicellularity in eukaryotes is seen in the development of complex, multicellular organisms today?
- endosymbiosis
- aggregation of cells to form a colony
- division of cells, with the resulting cells adhering together
- multiple cell types aggregating to form a complex organism
- none of the above
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The shape of radishes may be long (SL/SL), oval (SL/SS), or round (SS/SS), and the color of radishes may be red (CR/CR), purple (CR/CW) or white (CW/CW). If a long, red radish plant is crossed with a round, white plant, what will be the appearance of the F1 and F2 generations?
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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…
Chapter 22 Solutions
Principles of Biology
Ch. 22.1 - Prob. 1CCCh. 22.1 - Prob. 2CCCh. 22.1 - Prob. 1TYKCh. 22.1 - Prob. 2TYKCh. 22.2 - Prob. 1BCCh. 22.2 - Prob. 1CCCh. 22.2 - Look ahead to Table 27.1. What are the common...Ch. 22.2 - Prob. 1TYKCh. 22.2 - Eukaryotic cells were originally derived from an...Ch. 22.2 - Prob. 3TYK
Ch. 22.3 - Prob. 1CCCh. 22.3 - Prob. 1TYKCh. 22.3 - Prob. 2TYKCh. 22 - Prob. 1TYCh. 22 - Prob. 2TYCh. 22 - Prob. 3TYCh. 22 - Prob. 4TYCh. 22 - Which of the following explanations of...Ch. 22 - Prob. 6TYCh. 22 - Prob. 7TYCh. 22 - Prob. 8TYCh. 22 - Prob. 9TYCh. 22 - Prob. 10TYCh. 22 - Prob. 1CCQCh. 22 - Prob. 2CCQCh. 22 - PRINCIPLES Two principles of biology are (1)...Ch. 22 - Prob. 1CBQCh. 22 - Discuss how the human body has changed since the...
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