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8-10: In gerbils, the allele for long tail (7) is dominant to short tail (†). If two heterozygous parents produce offspring, what are the following probabilities? 8. The first offspring has a short tail? A) 0.0

8-10: In gerbils, the allele for long tail (7) is dominant to short tail (†). If two heterozygous parents produce offspring, what are the following probabilities? 8. The first offspring has a short tail? A) 0.0

Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter12: Mendel, Genes, And Inheritance
Section: Chapter Questions
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8-10: In gerbils, the allele for long tail (7) is dominant to short tail (†). If two heterozygous parents produce offspring, what are the following probabilities? 8. The first offspring has a short tail? A) 0.0 <ps0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <p<1.0 B) 0.1 <p<0.2 E) 0.4 <ps0.5 H) 0.7 <ps0.8 C) 0.2<p<0.3 F) 0.5 <p<0.6 I) 0.8 <ps0.9 9. The first two offspring have short tails? A) 0.0 sp<0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <p<0.5 H) 0.7 < p<0.8 C) 0.2 <p<0.3 F) 0.5 <ps0.6 I) 0.8 <p<0.9 10. A total of nine offspring, two with long tails and the rest with short tails (in any order)? A) 0.0 <p<0.1 D) 0.3 < p<0.4 G) 0.6 <p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <ps0.5 H) 0.7 <p<0.8 C) 0.2 <p<0.3 F) 0.5 <p<0.6 I) 0.8 <p<0.9 11. Given the pea plant cross: ( Tr Rr yy Aa x Ttrr YY Aa ), what is the expected frequency in the progeny for the phenotype ( tall, round, yellow, axial) where the following alleles map to these phenotypes: T= tall, 1 = dwarf, R = round, r = wrinkled; Y = yellow, y = green; A = axial, a = terminal. T, R, Y, and A are dominant alleles. A) 0.0 sp<0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <p<0.5 C) 0.2 <ps0.3 F) 0.5 <p<0.6 I) 0.8 < p<0.9 H) 0.7 < p<0.8
Transcribed Image Text:8-10: In gerbils, the allele for long tail (7) is dominant to short tail (†). If two heterozygous parents produce offspring, what are the following probabilities? 8. The first offspring has a short tail? A) 0.0 <ps0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <p<1.0 B) 0.1 <p<0.2 E) 0.4 <ps0.5 H) 0.7 <ps0.8 C) 0.2<p<0.3 F) 0.5 <p<0.6 I) 0.8 <ps0.9 9. The first two offspring have short tails? A) 0.0 sp<0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <p<0.5 H) 0.7 < p<0.8 C) 0.2 <p<0.3 F) 0.5 <ps0.6 I) 0.8 <p<0.9 10. A total of nine offspring, two with long tails and the rest with short tails (in any order)? A) 0.0 <p<0.1 D) 0.3 < p<0.4 G) 0.6 <p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <ps0.5 H) 0.7 <p<0.8 C) 0.2 <p<0.3 F) 0.5 <p<0.6 I) 0.8 <p<0.9 11. Given the pea plant cross: ( Tr Rr yy Aa x Ttrr YY Aa ), what is the expected frequency in the progeny for the phenotype ( tall, round, yellow, axial) where the following alleles map to these phenotypes: T= tall, 1 = dwarf, R = round, r = wrinkled; Y = yellow, y = green; A = axial, a = terminal. T, R, Y, and A are dominant alleles. A) 0.0 sp<0.1 D) 0.3 <p<0.4 G) 0.6 < p<0.7 J) 0.9 <ps1.0 B) 0.1 <p<0.2 E) 0.4 <p<0.5 C) 0.2 <ps0.3 F) 0.5 <p<0.6 I) 0.8 < p<0.9 H) 0.7 < p<0.8
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Introduction:

Law of Dominance states that dominant alleles always mask the recessive alleles. In heterozygous condition always dominant allele is expressed in F1 generation. The characters that appear in an F1 generation are called as dominant alleles and which are not expressed are recessive.

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