IncompleteMultAlleleSexLk+Edit

IncompleteMultAlleleSexLk+Edit - Chapter 7 Lecture Outline...

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Chapter 7 Lecture Outline Patterns of Inheritance
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2 Various Patterns of Inheritance Dominant/Recessive Mendel started with true breeding plants AA or aa (homozygous) Found that the recessive trait skipped a generation (Aa) Found mathematical ratios associated with each generation (P1, F1, F2)
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4 If an allele for tall plants (T) is dominant to short plants (t), what offspring would you expect from a TT x Tt cross? A. ½ tall; ½ short B. ¾ tall; ¼ short C. All tall Concept Quiz
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5 Extensions of Mendel’s Laws (Other types of Inheritance Patterns) Some alleles do not show Dominant/Recessive Patterns Incomplete dominance Blended Nondominant Codominance
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© 2006 W.W. Norton & Company, Inc. DISCOVER BIOLOGY 3/e 6 Extensions of Mendel’s Laws Many alleles do not show complete dominance, but instead - Incomplete dominance Red flower X White flower = Pink flower CoDominance Red flower x White flower = red/white spotted flower
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7 Incomplete Dominance Heterozygote is an intermediate Animal coat coloring or texture Flower coloring Snap Dragons
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© 2006 W.W. Norton & Company, Inc. DISCOVER BIOLOGY 3/e 8
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Incomplete dominance , in which the  heterozygote appears to be intermediate  between the two homozygotes.
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10 Fur color in rabbits shows incomplete dominance. F B F B individuals are brown, F B F W individuals are cream, F W F W individuals are white. What is the expected ratio of a F B F W x F W F W cross? A. 3 white: 1 brown B. 3 white: 1 cream C. 2 white: 2 cream Concept Quiz
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11 Concept Quiz A red carnation and a white carnation produce offspring that are all pink. The type of inheritance pattern occurring is: A. Complete dominance B. Incomplete dominance C. Codominance
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IncompleteMultAlleleSexLk+Edit - Chapter 7 Lecture Outline...

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