EBK HUMAN BIOLOGY
11th Edition
ISBN: 9780100545939
Author: MCMILLAN
Publisher: YUZU
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Chapter 19, Problem 8SQ
Summary Introduction
Introduction: The allele is the variant of the gene. The allele can be dominant or recessive. The dominant allele is the one that will be expressed in the heterozygous condition where two different alleles of the same gene are present. Phenotypic ratio refers to the ratio of the number of organisms in the generation that would express several
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Chapter 19 Solutions
EBK HUMAN BIOLOGY
Ch. 19 - Define the difference between (a) gene and allele,...Ch. 19 - Prob. 2RQCh. 19 - What is probability, and how is it applied in...Ch. 19 - What is independent assortment? Does independent...Ch. 19 - Alleles are ___________. a. alternate forms of a...Ch. 19 - A heterozygote has _____. a. only one of the...Ch. 19 - Prob. 3SQCh. 19 - Offspring of a cross AA aa are ______. a. all AA...Ch. 19 - Prob. 5SQCh. 19 - Prob. 6SQ
Ch. 19 - Which statement best fits the principle of...Ch. 19 - Prob. 8SQCh. 19 - Prob. 9SQCh. 19 - Prob. 10SQCh. 19 - One gene has alleles A and a. Another has alleles...Ch. 19 - Still referring to Problem 1, what will be the...Ch. 19 - Go back to Problem 1, and assume you now study a...Ch. 19 - The young woman shown at right has albinismvery...Ch. 19 - When you decide to breed your Labrador retriever...Ch. 19 - The ABO blood system has been used to settle cases...Ch. 19 - Prob. 7CTCh. 19 - A man is homozygous dominant for ten different...Ch. 19 - Prob. 9CTCh. 19 - Bill and Marie each have flat feet, long...Ch. 19 - You decide to breed a pair of guinea pigs, one...
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- In mating between two individuals that are heterozygous for a recessive allele, what genotypic ratio would you expect in the offspring? homozygous dominant: heterozygous: homozygous recessive? A. 1:2:1 B. 3:1:1 C. 1:2:0 D. 0:2:1 E. 1:4:2arrow_forwardRed-green color blindness is caused by a recessive allele on the X chromosome. A color blind woman and her normal vision husband have a color blind son. If they have a daughter what is the probability that the daughter will be color blind? Group of answer choices A. 50% B. 25% C. 100% D. 75% E. 0arrow_forwardA woman is a carrier for the color-blindness gene, found on the X chromosome. She does not have color blindness, however. What are the chances that her female child will also inherit this gene? a. no chance (0%) b. 1 in 4 chance (25%) c. 2 in 4 chance (50%) d. 100% chancearrow_forward
- A test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 ratio of phenotypes. The test subject is therefore ________. A. Unable to reproduce B. Homozygous recessive C. Not following the rules of Mendelian genetics D. Homozygous dominant E. Heterozygousarrow_forwardTwo parents without cystic fibrosis have a child with cystic fibrosis. The allele for cystic fibrosis is therefore _________ to the non-disease allele Group of answer choices A. codominant B. recessive C. dominant D. epistatic E. incompletely dominantarrow_forwardOne gene that affects three traits is an example of______ . a. dominance c. pleiotropy b. codominance d. epistasisarrow_forward
- Two blue ferrets were crossed and the outcome was ⅔ blue offspring and ⅓ that were pink. If you crossed two pink ferrets, what percentage of the offspring would be pink? A.25% B.33% C.66% D.75% E.100%arrow_forwardWhat is the offspring phenotypic ratio for a cross of a homozygous recessive individual and a heterozygous individual? all heterozygous a. 2:2 or 1:1 dominant : recessive Ob. all recessive O c. 1 dominant : 2 heterozygous : 1 recessive O d. all dominant e. 3 dominant : 1 recessive O f. 2:2 or 1:1 heterozygous : recessive 2:2 or 1:1 dominant : heterozygous Oh.arrow_forwardLabrador retrievers’ fur color is controlled by two alleles, E and B. Any dog with the ee__ genotype develops into a yellow lab, while B_E_ dogs become black labs and bbE_ dogs become chocolate labs. This is an example of _____. a. epistasis b. codominance c. incomplete dominance d. linkagearrow_forward
- Red-green color blindness is controlled by a recessive allele on the X chromosome. A colorblind father and a normal vision mother have a daughter with red green color blindness. If they have a son what is the probability that he will be color blind? Group of answer choices a. 0.75 b. 0.5 c. 0 d. 1 e. 0.25arrow_forwardThe offspring of the cross AA × aa are______ . a. all AA c. all Aa b. all aa d. half are AA and half are aaarrow_forwardA cross is carried out between genotypes AaBBCcddEe and AaBbccDdEE. How many phenotypes are possible in the offspring? Assume that the 5 loci assort independently and that, for each gene, the upper-case allele is completely dominant to the lower-case allele. O a. 2 O b. 6 OC. 4 O d. 16 O e. 32 O f. 8arrow_forward
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