Principles of Biology
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 16, Problem 3TY
Summary Introduction

Introduction:

In genetics, an organism's phenotype is the observed characteristics of the organism. It also means the morphology or physical form and structure of the organism, its processes of development, its biochemical and physiological characteristics, behavior, and behavioral products.

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A male mouse with genotype Igf2 Igf2m is crossed with a female who is Igf2 Igf2.  What would be the expected outcome of this cross?   All offspring would be normal because the paternal allele is expressed   1/2 the offspring would be normal; 1/2 would be dwarf   All offspring would be dwarf because the maternal allele is silenced   3/4 of the offspring would be normal; 1/4 would be dwarf   All offspring would be dwarf because the paternal allele is silenced
An ebony strain of flies was discovered to be sensitive to carbon dioxide. Crossing a female sensitive strain with male resistant strain gave all sensitive offspring. The offspring of an F1 female crossed with a resistant male were all sensitive.  Using the following key to your illustrations using shapes, make a reciprocal cross up to the F2 generation. Put your illustrations in the space provided below. Label the phenotypes of all individuals in the reciprocal cross.  Adjust spacing, if necessary.  Make sure that the complete cross(es) can fit the same page. Big blue circle - male cytoplasm Big pink circle - female cytoplasm Small half-blue-half-pink circle - F1 nucleus Small blue circle - male nucleus Small pink circle - female nucleus give a diagram please
An ebony strain of flies was discovered to be sensitive to carbon dioxide. Crossing a female sensitive strain with male resistant strain gave all sensitive offspring. The offspring of an F1 female crossed with a resistant male were all sensitive.  Using the following key to your illustrations using shapes, make a reciprocal cross up to the F2 generation. Put your illustrations in the space provided below. Label the phenotypes of all individuals in the reciprocal cross.  Adjust spacing, if necessary.  Make sure that the complete cross(es) can fit the same page. Big blue circle - male cytoplasm Big pink circle - female cytoplasm Small half-blue-half-pink circle - F1 nucleus Small blue circle - male nucleus Small pink circle - female nucleus
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY