Biology
3rd Edition
ISBN: 9781259824913
Author: Hoefnagels, Mariëlle
Publisher: Mcgraw-hill Education,
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Chapter 25, Problem 2SL
Review Why We Care 25.1, which explains how synthetic steroids affect the body. Find a website that supports the use of “testosterone boosters” and a website that says that they are dangerous. Which individual or organization produced each website? Which website might be more reliable, and why do you think so?
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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 25 Solutions
Biology
Ch. 25.1 - Prob. 1MCCh. 25.1 - Prob. 2MCCh. 25.1 - Prob. 3MCCh. 25.2 - Prob. 1MCCh. 25.2 - Prob. 2MCCh. 25.2 - Describe the location of the receptors that bind...Ch. 25.3 - Prob. 1MCCh. 25.3 - Prob. 2MCCh. 25.4 - Prob. 1MCCh. 25.4 - Prob. 2MC
Ch. 25.4 - Compare the hormones of the adrenal cortex and...Ch. 25.4 - Prob. 4MCCh. 25.4 - Prob. 5MCCh. 25.5 - Prob. 1MCCh. 25.5 - What are the functions of estrogen, progesterone,...Ch. 25 - Prob. 1MCQCh. 25 - Prob. 2MCQCh. 25 - Prob. 3MCQCh. 25 - Prob. 4MCQCh. 25 - Prob. 5MCQCh. 25 - Prob. 6MCQCh. 25 - Prob. 7MCQCh. 25 - Prob. 1WIOCh. 25 - Prob. 2WIOCh. 25 - Prob. 3WIOCh. 25 - Prob. 4WIOCh. 25 - Prob. 5WIOCh. 25 - Prob. 6WIOCh. 25 - Prob. 7WIOCh. 25 - Prob. 8WIOCh. 25 - Prob. 9WIOCh. 25 - Prob. 10WIOCh. 25 - Prob. 1SLCh. 25 - Review Why We Care 25.1, which explains how...Ch. 25 - Prob. 1PITCh. 25 - Prob. 2PITCh. 25 - Label the endocrine glands that are primarily...
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- 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:arrow_forwarda. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involvedarrow_forwardIf you wanted to reduce the difference between peak and trough levels that occur with repeated administration of a drug, how would you adjust the dose and dose interval without changing the plateau concentration (plateau is the average of peak and trough levels)? Select your answers for both dose and interval. Hint: It may be helpful to think about this problem using an example such as food. How would you eat if you wanted to maintain very steady hunger/satiety levels without changing your total caloric intake? Options: A. Dose; Increase dose B. Dose; Decrease dose C. Dose; Do not change dose D. Interval; Increase the interval between doses (give the drug less frequently) E. Interval; Decrease the interval between doses (give the drug more frequently) F. Interval; Do not change the intervalarrow_forward
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- why are native freshwater mussels are an important part of great lakes ecosystemarrow_forwardwhat morphological features differentiate the lamprey species and other species in the great lakesarrow_forwardThere are a wide range of therapeutic applications available as options for patients. Medical professionals should be aware of these applications so they can make informed recommendations to patients. To gain a better understanding of some therapeutic applications and how they are related to RNA and mRNA, research long non-coding RNA. Respond to the following in a minimum of 175 words: What is lncRNA and what does it do? How does IncRNA differ from mRNA? What are some therapeutic applications associated with lncRNA? Think about possible future uses of this application. What are the advantages and disadvantages of this application and its continued use?arrow_forward
- four fish or mussel species that are native to the great lakesarrow_forwardThere are a wide range of therapeutic applications available as options for patients. Medical professionals should be aware of these applications so they can make informed recommendations to patients. To gain a better understanding of some therapeutic applications and how they are related to RNA and mRNA, research long non-coding RNA. Respond to the following in a minimum of 175 words: What is lncRNA and what does it do? How does IncRNA differ from mRNA? What are some therapeutic applications associated with lncRNA? Think about possible future uses of this application. What are the advantages and disadvantages of this application and its continued use?arrow_forwardfour physial characteristics of a fish or a mussel that would help you identify it to a speciesarrow_forward
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