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a. A certain species of spider may have long or short legs. The abdomen may be round or elongated. A female spider that is true breeding for long legs and a round abdomen is mated with a male spider with short legs and an elongated abdomen. All the offspring from this cross are spiders with long legs and round abdomens. When the reciprocal cross is made, all the offspring are spiders with long legs and elongated abdomens. Explain the inheritance mechanisms that produce these results and where applicable indicate the dominance relationship. b. A type of mouse may have round ears or pointed ears. A female mouse homozygous for pointed ears is crossed with a male mouse homozygous for round ears. All the male offspring have pointed ears and all the female offspring have round ears. When the F1 offspring are crossed with each other, the resulting F2 are produced in the following ratios: Males: 3 pointed : 1 rounded Females: 3 rounded : 1 pointed Explain the inheritance mechanism that produces these results and indicate the dominance relationship. Please label your answers a and b.

a. A certain species of spider may have long or short legs. The abdomen may be round or elongated. A female spider that is true breeding for long legs and a round abdomen is mated with a male spider with short legs and an elongated abdomen. All the offspring from this cross are spiders with long legs and round abdomens. When the reciprocal cross is made, all the offspring are spiders with long legs and elongated abdomens. Explain the inheritance mechanisms that produce these results and where applicable indicate the dominance relationship. b. A type of mouse may have round ears or pointed ears. A female mouse homozygous for pointed ears is crossed with a male mouse homozygous for round ears. All the male offspring have pointed ears and all the female offspring have round ears. When the F1 offspring are crossed with each other, the resulting F2 are produced in the following ratios: Males: 3 pointed : 1 rounded Females: 3 rounded : 1 pointed Explain the inheritance mechanism that produces these results and indicate the dominance relationship. Please label your answers a and b.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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a. A certain species of spider may have long or short legs. The abdomen may be round or elongated. A female spider that is true breeding for long legs and a round abdomen is mated with a male spider with short legs and an elongated abdomen. All the offspring from this cross are spiders with long legs and round abdomens. When the reciprocal cross is made, all the offspring are spiders with long legs and elongated abdomens. Explain the inheritance mechanisms that produce these results and where applicable indicate the dominance relationship. b. A type of mouse may have round ears or pointed ears. A female mouse homozygous for pointed ears is crossed with a male mouse homozygous for round ears. All the male offspring have pointed ears and all the female offspring have round ears. When the F1 offspring are crossed with each other, the resulting F2 are produced in the following ratios: Males: 3 pointed : 1 rounded Females: 3 rounded : 1 pointed Explain the inheritance mechanism that produces these results and indicate the dominance relationship. Please label your answers a and b.
Transcribed Image Text:a. A certain species of spider may have long or short legs. The abdomen may be round or elongated. A female spider that is true breeding for long legs and a round abdomen is mated with a male spider with short legs and an elongated abdomen. All the offspring from this cross are spiders with long legs and round abdomens. When the reciprocal cross is made, all the offspring are spiders with long legs and elongated abdomens. Explain the inheritance mechanisms that produce these results and where applicable indicate the dominance relationship. b. A type of mouse may have round ears or pointed ears. A female mouse homozygous for pointed ears is crossed with a male mouse homozygous for round ears. All the male offspring have pointed ears and all the female offspring have round ears. When the F1 offspring are crossed with each other, the resulting F2 are produced in the following ratios: Males: 3 pointed : 1 rounded Females: 3 rounded : 1 pointed Explain the inheritance mechanism that produces these results and indicate the dominance relationship. Please label your answers a and b.
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