Campbell Biology in Focus (2nd Edition)
Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 2.1, Problem 2CC
Summary Introduction

To describe:

The effect of iron deficiency in humans which is responsible for carrying oxygen in red blood cells.

Introduction:

Trace elements or minerals are those elements that are required by the body of an organism in small amount. These include iron, manganese, copper, molybdenum, zinc, boron, chlorine, nickel, iodine, selenium, chromium, silicon, vanadium, fluoride, lead cadmium, mercury, arsenic, aluminum. They are present in small amount but are important for the growth and development of body.

Some of these trace elements are used as a catalyst for enzymatic reactions. Trace elements are toxic if it is consumed in higher quantity. Trace elements are of two types essential and non essential. Essential trace elements are those which are required for the growth and development while non essential elements are those that are present in the body but are not required for growth and development.

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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…

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Campbell Biology in Focus (2nd Edition)

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