Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 16.6, Problem 2C
- • CONNECT To be expressed, an autosomal recessive genetic disease must be homozygous. What relationship does this fact have to consanguineous matings?
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• Describe what it means that a strain of Drosophila is wild-type for a particular
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• Identify one mutant phenotype that can be observed in Drosophila.
A man with hemophilia (X-linked recessive) has two kids:
a girl who has a normal phenotype, and
a boy who has hemophilia.
What is the genotype of the man?
What is the genotype of the boy?
From which parent did the boy
get his X-chromosome?
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• What must be the genotype of their mother?
If this same man and woman have more children,
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• First identify the gametes. Use labels of Group 1 to identify the male and female gamete types and labels of Group 2 to identify the gamete frequencies.
. Then identify the F2 progeny. Use labels of Group 1 to identify the progeny genotypes and labels of Group 2 to identify the progeny frequencies.
► View Available Hint(s)
G
Female
gametes
9 GG Gg 99
Gg
2
9
12/201 9
11/12
GG
Gg
Male
gametes
16
9
Gg
99
13/14
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Chapter 16 Solutions
Biology (MindTap Course List)
Ch. 16.1 - Distinguish between karyotyping and pedigree...Ch. 16.1 - Prob. 2LOCh. 16.1 - Prob. 3LOCh. 16.1 - Prob. 1CCh. 16.1 - Prob. 2CCh. 16.1 - Describe two ways in which genome database...Ch. 16.1 - Prob. 4CCh. 16.2 - Explain how nondisjunction in meiosis is...Ch. 16.2 - Distinguish among the following structural...Ch. 16.2 - Prob. 6LO
Ch. 16.2 - VISUALIZE Draw a simple sketch illustrating how...Ch. 16.2 - Prob. 2CCh. 16.2 - Prob. 3CCh. 16.2 - Prob. 4CCh. 16.3 - State whether each of the following genetic...Ch. 16.3 - Which of the following genetic diseases is/are...Ch. 16.3 - Prob. 2CCh. 16.3 - Prob. 3CCh. 16.4 - Briefly discuss the process of gene therapy,...Ch. 16.4 - Prob. 1CCh. 16.5 - State the relative advantages and disadvantages of...Ch. 16.5 - Distinguish between genetic screening programs for...Ch. 16.5 - Prob. 1CCh. 16.5 - Prob. 2CCh. 16.6 - Prob. 11LOCh. 16.6 - Prob. 1CCh. 16.6 - CONNECT To be expressed, an autosomal recessive...Ch. 16.6 - Prob. 3CCh. 16 - Prob. 1TYUCh. 16 - An abnormality in which there is one more or one...Ch. 16 - The failure of chromosomes to separate normally...Ch. 16 - Prob. 4TYUCh. 16 - Prob. 5TYUCh. 16 - Prob. 6TYUCh. 16 - Prob. 7TYUCh. 16 - Prob. 8TYUCh. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Prob. 11TYUCh. 16 - SCIENCE, TECHNOLOGY, AND SOCIETY Imagine that you...Ch. 16 - A common belief about human genetics is that an...Ch. 16 - Prob. 14TYUCh. 16 - EVOLUTION LINK Explain some of the evolutionary...
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- Imagine you are working in a genetics lab with the fruit fly Drosophila melanogaster, a model organism for genetics research. You want to determine whether a trait you have discovered in fruit flies is dominant or recessive. • Predict what types of outcomes are possible. Which would indicate that the trait is dominant? Which would indicate that it is recessive?arrow_forwardQ7: In mammais the yeliow hair colour B and the brown hair colour are sex-linked characters. If these two genes combine in an organism it will show co-dominance and will give an orange colour. What is the result of F1 if a yellow male is crossed with a brown female?arrow_forwardActivity 11 Study this figure which indicates the normal and abnormal chromosomes then answer the following Questions Normal Male karyotype Normal Fema karyotype 》 3 品研明 10 11 12 13 14 15 17 18 88 19 20 Down Syndrom Edwards Syndrom Turner Syndrom 文自真丸 21 11 12 11 12 13 14 15 16 18 13 17 14 17 18 131 19 20 21 22 19 20 21 Xo 1. Compare the number of chromosomes in the Down syndrome with the nor- mal karyotypes explain the difference between them. 2. Which of the karyotyes contains 3 sexual chromosomes? 3. Depending on the karyotyes, how can a patient with Edwards syndrome, Turner syndrome and Down Syndrome be diagnosed? 4. Describe the symptoms of the Down Syndrome, Edwards syndrome andTurn- er syndrome トarrow_forward
- Two parents with blood types B (genotype unkown) and AB are having a child. • Outline all possibilities of blood types for the child arise using two Punnett squares and point out the probabilities for all phenotypes. You have to consider both possible genotpypes for the blood type B parent. Explain complete dominance and co-dominance in detail with of the above phenotypes and genotypes.arrow_forwardCRCR (red flowers); CRCW (pink flowers); CWCW (white flowers); F (full leaves) > f (slender leaves); H (heat tolerant) > h (vulnerable to heat) G*G? (green leaves); GʻG? (green and yellow leaves); G?G² (yellow leaves) CRCR Ff Hh G1G1 x CRCW Ff hh GʻG? Box 1: Which trait displays incomplete dominance? Box 2: What is the PHENOTYPE of the second parent in the cross? Box 3: What is the probability of having an offspring which is completely HETEROZYGOUS? Show your work by listing the fractions and how you would determine the answer (add, subtract, divide, multiply, etc).arrow_forward• The allele for tall (T) is dominant to short (t) and the allele for green pods (G) is dominant to yellow pods (g). o 1. A pea plant is homozygous for being tall and has yellow pods. - la. What is the genotype of this plant? - 1b. What gametes can it produce? o 2. Another pea plant is short and heterozygous for green pods. 1 2a What is the genotype of this plant? - 2b What gametes can it produce? o 3. If you cross these two plants give the phenotypes of the offspring. Edit View Insert Format Tools Table Paragraph v В I U Av ev T? v: 12pt v PRINECOMA3_..pptx MacBook Air DII 20 F9 F7 F8 F4 F5 F6 F2 F3 へ #3 $ 4 6. 7 8. R T Y U 会 S LOarrow_forward
- VISUALIZE Draw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.arrow_forwardScenario part 2 • A population of beetles in the species Dwayne therock (I made this up) are living in a rotting log in a forest. • In these beetles, color is controlled by 1 gene. • There are two alleles - R for Red and r for orange. • These beetles have sex chromosomes like humans. Males are XY, females are XX. • this is an x-linked trait Questions part 2 A. What are all the possible genotypes a red beetle could have? (list them all) B. What phenotype would a heterozygous female beetle have? C. If a male with no R alleles and a female with 1 of each allele had offspring, what are the chances (in %) of having an orange beetle offspring? D. If a male with no R alleles and a female with 1 of each allele had offspring, what are all the possible genotypes of their offspring? (list them all)arrow_forwardElaborate on the importance of mitotic and meiotic divisions in the transmission of traits.arrow_forward
- ACTIVITY 5: Sex-linked inheritance In many animals, the sex of an individual is determined by which sex chromosomes (X or Y) are inherited. In mammals (and the fruit fly Drosophila), females have 2 X chromosomes and males have one X and one Y. The X and Y are an unusual pair of homologous chromosomes. The X is large and contains thousands of genes, while the Y is small and contains few genes. Most genes on the X are not found on the Y, so males possess only one copy of each X-linked gene and females have 2 copies. This means that X-linked recessive traits are expressed more often in males. Eye color is a sex-linked trait in Drosophila. The allele for red eyes is dominant to the allele for white eyes. Because this gene is on the X chromosome, the alleles are written as XR and Xr. A. Do a Punnett square for a cross between a homozygous red-eyed female (XR XR ) and a white-eyed male (Xr Y). What would be the genotypes of the female…arrow_forwardNeed help number 10 is the problem solver How many different phenotypes are possible among the offspring ? What is the probability of getting DD offspring ? What is the probability of getting dad offspring ?arrow_forwardO Macmillan Learning Assume that the length of wheat leaves is controlled by three loci, each with two alleles: L and I, W and w, H and h. Determine the differences in leaf length between two homozygous strains of wheat. Assume each allele contributes equally to the length of the plant leaves. One homozygous strain, Il ww hh, has leaves that are 100 mm in length, and the other strain, LL WW HH, has 220 mm leaves. The two homozygous strains are crossed, and the resulting F₁ are selfed to produce F₂ progeny. What length will the leaves of the Ll Ww Hh genotype plant be? leaf length: What proportion of the F2 progeny will have the same phenotype as the LI Ww Hh genotype? Input answer as a decimal. proportion: mmarrow_forward
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