Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 9, Problem 17SQ
Summary Introduction
To explain:
The type of offspring formed when a black short-haired male rabbit is mated with a brown long haired female rabbit, genotypes of the offspring formed, and the
Introduction:
The rabbits have genes for long hair, short hair, black color and brown color of the body which forms a dihybrid cross. The crosses between these mice lead to the formation of the offspring.
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Bronze coloured turkey is controlled by a dominant allele, B. Red coloured turkey is homozygous for a recessive allele bb. Dominant gene N produce normal feather and recessive genotype produce ‘hairy’ feather nn. In a cross between homozygous bronzed coloured turkey with ‘hairy’ feather and homozygous red coloured turkey with normal feather. What are the ratios of F2 progeny with Bbnn genotypes?
(I want to check if what i'm doing is correct)
In certain species of flies, eye color is controlled by sim-·ple dominance by a single pair of alleles. A red-eyed fly was crossed with a white-eyed fly, both of whose parents had white eyes. All of their offspring (both female and male) had red eyes.a. Which is dominant, the allele for red eyesor the allele for white eyes?b. What is the genotype of the white-eyed parents?c. If the white-eyed parent was mated with one of the red-eyed offspring, what phenotypic ratio wouldyou expect regarding eye color?
In Doodlewags (hypothetical creatures), the dominant allele S causes solid coat color; the
recessive allele s results in white spots on a colored background. The black coat color allele B is
dominant to the brown allele b, but these genes are expressed only in the genotype A-. Individuals
that are aa are yellow regardless of B alleles. Six pups are produced in a mating between a solid
yellow male and a solid brown female. Their phenotypes are 2 solid black, 1 spotted yellow, 1 spotted black and 2 solid brown.
a. What are the genotypes of the male and female parents? Must show work/explain to get full
credit.
b. What genetic effect is being illustrated in part "a"? Explain in a minimum of 3 sentences.
Chapter 9 Solutions
Campbell Essential Biology (7th Edition)
Ch. 9 - The genetic makeup of an organism is called its...Ch. 9 - Which of Mendels laws is represented by each...Ch. 9 - Edward was found to be heterozygous (Ss) for the...Ch. 9 - Whether an allele is dominant or recessive depends...Ch. 9 - Prob. 5SQCh. 9 - Prob. 6SQCh. 9 - Prob. 7SQCh. 9 - Prob. 8SQCh. 9 - Adult height in people is at least partially...Ch. 9 - A purebred brown mouse is repeatedly mated with a...
Ch. 9 - How could you determine the genotype of one of the...Ch. 9 - Tim and Jan have freckles (a dominant trait), but...Ch. 9 - Incomplete dominance is seen in the inheritance of...Ch. 9 - Why was Henry VIII wrong to blame his wives for...Ch. 9 - Both parents of a boy arc phenotypically normal,...Ch. 9 - Heather was surprised to discover that she...Ch. 9 - Prob. 17SQCh. 9 - Prob. 18IMTCh. 9 - Prob. 19IMTCh. 9 - For each pair of your homologous chromosomes, one...Ch. 9 - In 1981, a stray cat with unusual curled-back ears...Ch. 9 - Interpreting Data As shown in the Punnett square...Ch. 9 - There are now nearly 200 recognized breeds of dog,...Ch. 9 - Gregor Mendel never saw a gene, yet he concluded...Ch. 9 - Prob. 25BS
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- The ABO blood groups in humans are expressed as the I A , I B , and i alleles. The I A allele encodes the A blood group antigen, I B encodes B, and i encodes O. Both A and B are dominant to O. If a heterozygous blood type A parent (I A i) and a heterozygous blood type B parent (I B i) mate, one quarter of their offspring are expected to have the AB blood type (I A I B ) in which both antigens are expressed equally. Therefore, ABO blood groups are an example of: a. multiple alleles and incomplete dominance b. codominance and incomplete dominance c. incomplete dominance only d. multiple alleles and codominancearrow_forwardIn dogs, a dominant gene (I) determines white coat, and a recessive gene (i) gives colored coat. In the presence of ii the coat color is black due to the dominant gene B, or brown due to the recessive gene b. Two dogs both having the Bbli genotype were mated. Answer the following questions and show complete solutions to support your answers. Use the branching method whenever applicable.a. What is the phenotypic ratio of the offspring?b. What type of gene interaction is exhibited by the coat color in dogs?c. What would be the probability of getting dogs that are pure-breeding for a black coat color?arrow_forwardIn fruit flies, the allele for long wings (A) is dominant to the allele for short wings (a), and the allele for light brown body color (B) is dominant to the allele for ebony body color (b). What is the genotype of a fruit fly that is homozygous dominant for wing length and heterozygous for body color? aaBB AаBb О ААВЬ AAbb aabbarrow_forward
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