WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
3rd Edition
ISBN: 9781319103316
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 7, Problem 8MC
Summary Introduction
Introduction:
Pedigree analysis is a major tool in genetics. It is a family tree that maps the occurrence of a trait in a family for several generations.
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Students have asked these similar questions
Which of the following is used to identify the chromosomal region(s) associated with
a continuous trait?
a) Narrow-sense heritability
b) Twin studies
O c) Correlation coefficient
O d) QTL mapping
If a single expressed gene can affect multiple traits at once, what would be the most precise manner of referring to this phenomenon?
a) Polygenic.
b) Monogenic.
c) Pleiotropic.
d) Polytropic.
If you have a recessive phenotype for a given trait, but neither of your parents has that phenotype, what can you say about the genotype of your parents for that trait?
A)
Both of your parents must be homozygous dominant
B)
Both of your parents have to be hetorozygous
C)
One of your parents might be homozygous dominant but the other has to be hetorozygous
D)
Both of your parents have to be homozygous recessive
Chapter 7 Solutions
WHAT IS LIFE? A GUIDE TO BIO 3E+LAUNCHPA
Ch. 7 - Prob. 1SACh. 7 - Prob. 2SACh. 7 - Prob. 3SACh. 7 - Prob. 4SACh. 7 - Prob. 5SACh. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Prob. 8SACh. 7 - Prob. 9SACh. 7 - Prob. 10SA
Ch. 7 - Prob. 11SACh. 7 - Prob. 12SACh. 7 - Prob. 13SACh. 7 - Prob. 14SACh. 7 - Prob. 15SACh. 7 - Prob. 1MCCh. 7 - Prob. 2MCCh. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Prob. 5MCCh. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Prob. 10MCCh. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Prob. 13MCCh. 7 - Prob. 14MCCh. 7 - Prob. 15MCCh. 7 - Prob. 16MC
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- Two pea plants that are true-breeding for recessive white flowers are mated and their offspring analyzed. Which of the following statements about this situation is true? Group of answer choices A)The offspring represent the P generation. B)The gametes produced by the offspring will carry only one allele for this gene. C)Both parents are referred to as heterozygotes. D)Half of the offspring will be true-breeding for white flowers.arrow_forwardIf traits are inherited together, for example if Mendel found that this pea plant always had yellow and round seeds or green and wrinkled but never yellow and wrinkled or green and round. The explanation for this must be that; a) There is one gene controlling both phenotypes Ob) The genes are located close together on the same chromosome c) The genes are located on the same chromosome d) The genes are located close together on the same chromosome or there could be one gene controlling both phenotypesarrow_forwardCross a true-breeding plant that produces yellow seeds with a plant that produces green seeds. a) Using the table below, specify the notation that you will use. b) What are the genotypes of the parent plants? c) Draw the Punnett Square for the cross. d) Write the expected genotypic ratio of the potential offspring. e) Write the expected phenotypic ratio of the potential offspring. Character Flower color Flower position Seed color Seed shape Pod shape Pod color Stem length ©2012 Pearson Education, Inc. Dominant Purple Axial Yellow Round Inflated Green Tall Traits Recessive White Terminal Green Wrinkled Constricted Yellow Dwarfarrow_forward
- Curley hair is due to a dominant allele and while straight hair is due to a recessive allele in humans. The heterozygous condition results in wavy hair texture. Two parents that both have wavy hair will have children with which possible hair textures? a) Curley b) Straight c) Wavy d) all of the abovearrow_forwardImagine a test cross for an unknown exhibiting 2 traits, where half of the offspring exhibit both dominant traits and the other half exhibits one dominant and one recessive trait. What can you conclude about the unknown? options: A) The unknown is homozygous dominant for both traits. B) The unknown is homozygous recessive for both traits. C) The unknown is heterozygous for both traits. D) The unknown is homozygous for one gene and heterozygous for the other. E) There is not enough information to determine the answer.arrow_forward1) Dr. Thompson is hoping to produce a tester outcome from her cross. Which of the following would depict a tester PHENOTYPE? a) mmnn. b) MmNn. c) mn. d) MN. 2) By decomposing the cross, MmNn X Mmnn, into single gene outcomes, the possibility of obtaining a double recessive outcome for the ‘M’ gene is: a) 50%! b) 100! c) 0%! d) 25%!arrow_forward
- ii) State the genotypes of individuals # 1-5 in the following table using the letter "A". Use the uppercase letter to represent the dominant allele and lowercase letter to represent the recessive allele. Genotype Individual #1 # 3 #4 #5 If individuals # 2 and 3 have another son what are the chances that this son will be affected? b) i) What is the most likely mode of inheritance for this pedigree? ii) State the genotypes of individuals # 6-8 in the following table using the letter "B". Use the uppercase letter to represent the dominant allele and lowercase letter to represent the recessive allele. Individual # 6 7 # 7 # 8 Genotypearrow_forwardAn S1S2 ×S1S2 mating is performed. If the phenotypic ratio of the progeny is 3:1, then... (Justify your answer) A) one allele is dominant and the other is recessive. B) neither allele is dominant. C) the S1 allele is dominant to the S2 allele. D) the S2 allele is dominant to the S1 allele. E) the relationship between the alleles cannot be determinedarrow_forwardSince each child of two heterozygous parents has a 1/4 chance of receiving a recessive trait from each parent. A)If the first child is phenotypically recessive, then the next child has 3/4 chance of being phenotypically recessive B)no matter what the first child's phenotype, the next child will have a 1/4 chance of being phenotypically recessiveC)if the first child is phenotypically recessive, then the next child has a 1/2 chance of being phenotypically recessive D)if the first child is phenotypically recessive, then the next child must be phenotypically dominant.arrow_forward
- Which statement is false when considering alleles and genes? a) A given gene can have many different possible alleles. b) Alleles are alternative forms or variants of genes. c) Individuals can be homozygous or heterozygous, and this refers to which alleles they have for a particular gene. d) An allele is the same thing as a gene.arrow_forward1) How many unique gametes could be produced through independent assortment by an individual with the genotype: AaBb? A) 1 B) 2 C) 3 D) 4 E) 8arrow_forward6)Heterozygote is a)an individual who has two copies of the same allele for a particular gene b)an individual who has one copy of the most common allele for a particular gene c)an individual who has to different alleles for a particular gene d)an individual who has one copy of the least common allele for a particular genearrow_forward
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