EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
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Chapter 29.3, Problem 1R
Summary Introduction
To review:
Mating types in fungi and how they are different from male and female sexes.
Introduction:
Mating in fungi is a complex process based on mating types. Many species do not reproduce sexually and the ones, which do have isogamous gametes. This makes it difficult to classify a
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How does sexual selection benefit the choices of mating between men and women?
In fruit flies and humans, sex is determined by an X-Y system. However, many organisms do not have the X-Y system of sex determination just like in birds. Instead, they have the Z-W system. Male birds are ZZ whereas, female birds are ZW. In chickens, barred feathers (ZB) are dominant over nonbarred feathers (Zb). If a barred female chicken mates a nonbarred male chicken, what is the probability of having barred female offspring?
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What is purposeful control over mating by choice of parents for the next generation?
Chapter 29 Solutions
EBK LIFE: THE SCIENCE OF BIOLOGY
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- Explain:arrow_forwardDirection: Solve the problem using a Punnett square. In fruit flies, humans and other mammals, sex is determined by an X-Y system However, many organisms do not have the X Y system of sex determination. For example, birds have a Z - W system Male birds are ZZ whereas females are ZW. In chickens, barred feathers (Z) are dominant over nonbarred feathers (Zb). a. Draw a Punnett square that shows the results of a cross between a barred female and a nonbarred male. b. What is the probability that the offspring will be: i. Barred females? ii. Nonbarred females? iii. Barred males? iv. Nonbarred males?,arrow_forwardIn some animal species, being tall is dominant over being short. If a homozygous dominant individual mates with a short individual, what is the chance that their offspring will be heterozygous?arrow_forward
- The genetic identity of the female parent is RrGg and the genetic identity of the male parent is Rrgg. They produce 320 offspring together from a single mating: 57 red-eyed females with grey bodies, 61 red-eyed females with yellow bodies, 22 brown-eyed females with grey bodies, 20 brown-eyed females with yellow bodies.59 red-eyed males with grey bodies, 63 red-eyed males with yellow bodies, 20 brown-eyedmales with grey bodies, 18 brown-eyed males with yellow bodies. Show the simultaneous transmission of the two genes involved to give rise to the progeny given with the use of genetic diagrams and summaries as required. (Hint: you are only requiredto show the simultaneous transmission from the P to F1 generations)arrow_forwardIn rabbits, the gene that codes for a spotted coat is dominant over the gene that codes for a solid coat, and the gene for the coat's black color is dominant over the gene for the coat's brown color. If a spotted, black-coated rabbit mates with a solid, brown-coated rabbit, what are the genotypes and phenotypes of their offspring?arrow_forwardIf two individuals have incompatible gametes, what will be the result of a mating event between them?arrow_forward
- Compare and contrast female choice and male choice. Explain why sometimes it is thefemale and sometimes it is the male that is choosy. Why should one sex be choosy atall? Provide examples and interpret data.arrow_forwardA sex-linked dominant gene, barred (feather pattern) can be used to sex newly hatched chicks. If abarred hen is mated to non-barred rooster, what are the phenotypes of the males and female chicks?arrow_forwardexplain Interrupted mating diagramaticallyarrow_forward
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