Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 40, Problem 1ITD
Summary Introduction
To review:
The group of rats that break the photobeam in the initial 5-minute interval of the given study.
Introduction:
3,4 Methylenedioxymethamphetamine (MDMA) is commonly called ecstasy. It is a psychoactive drug that is used for recreational purpose, but many people abuse this drug and take in excessive amount. The drug shows its effects after 40 minutes of oral ingestion and the person feels pleasure and empathy. The effect of the drug lasts for about 6 hours.
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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 40 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 40.1 - Distinguish between a nerve net, nerves, and nerve...Ch. 40.1 - Prob. 2SBCh. 40.2 - Prob. 1SBCh. 40.3 - Prob. 1SBCh. 40.3 - What is the difference between gray matter and...Ch. 40.3 - Prob. 3SBCh. 40.3 - Prob. 4SBCh. 40.4 - Prob. 1SBCh. 40 - Prob. 1TYKCh. 40 - Prob. 2TYK
Ch. 40 - Prob. 3TYKCh. 40 - Prob. 4TYKCh. 40 - Prob. 5TYKCh. 40 - Which one of the following structures participates...Ch. 40 - Prob. 7TYKCh. 40 - Prob. 8TYKCh. 40 - Prob. 9TYKCh. 40 - Prob. 10TYKCh. 40 - Prob. 11TYKCh. 40 - Prob. 12TYKCh. 40 - Discuss Concepts In the 1930s and 1940s,...Ch. 40 - Prob. 14TYKCh. 40 - Prob. 15TYKCh. 40 - Prob. 1ITDCh. 40 - Prob. 2ITDCh. 40 - Prob. 3ITDCh. 40 - Prob. 4ITD
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