Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Topic Video
Question
Transcribed Image Text:The genes for sepia eye color, short bristles, and dark body coloration are on the same chromosome of *Drosophila melanogaster*. Each gene has two alleles: wild type, which is dominant, or mutant, which is recessive.
- **se+** is dominant and causes red eyes; **se** is recessive and causes sepia eyes.
- **sb+** is dominant and causes long bristles; **sb** is recessive and causes short bristles.
- **b+** is dominant and causes gray body coloration; **b** is recessive and causes dark body coloration.
The **sepia** gene and **short bristle** gene are separated by 33 map units; the **short bristle** gene and the **dark body** gene are separated by 12 map units. The **sepia** gene and **dark body** gene are separated by 45 map units.
If you crossed a fly, which was homozygous for the wild type allele of each gene (and had the phenotypes red eyes, long bristles, and gray body) with a homozygous recessive fly for each gene (and had the phenotypes sepia eyes, short bristles, and dark body coloration), the F1 generation would entirely consist of flies that had the wild type traits, but were heterozygous for each gene.
If you were to conduct a test cross, and cross these heterozygous F1 flies to recessive homozygous flies, how many flies would you predict to observe in each of the eight predicted phenotypic categories with respect to these three genes (given the map units above) if there were **1,000 total offspring**? Show your work. (Some portions are marked with black lines.)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The white spotting is caused by the S gene (“S” stands for spotting), which has 2 alleles: big S (spotting) and little s (no spotting). The big S allele is dominant, so if there is at least one S allele (SS or Ss), the cat will have white spots. Calix has white spots, so he definitely has at least one big S allele. The rest of the fur color is controlled by the O gene that also has 2 alleles: big O (orange fur) and little o (black fur). The O gene is on the X chromosome. Males only have one X chromosome, so they can only have one allele for the O gene. They can either be orange (O) or black (o). Females have two X chromosomes, so they can have two alleles for the O gene. If they have two O alleles (OO), they are orange. If they have two o alleles (oo), they are black. If they have one of each allele (Oo), they have both orange and black fur. female: XX male:XY Which of the following fur colors are possible in males? Choose all that apply. Remember that the S gene for white spots is…arrow_forwardHello Heliodors! (cont.) Trait A For Heliodors, having four arm-like extensions is dominant over having two. In a family of Heliodors, Hayden has four arm-like extensions like his mother Helen. His father, Harry, and sister, Holly both have two. What are the genotypes of everyone in this family of Heliodors? What is Hayden's genotype? O Not enough information to determine. AA (homozygous dominant) Aa (heterozygous) aa (homozygous recessive)arrow_forwardHello Heliodors! (cont.) Trait A For Heliodors, having four arm-like extensions is dominant over having two. In a family of Heliodors, Hayden has four arm-like extensions like his mother Helen. His father, Harry, and sister, Holly both have two. What are the genotypes of everyone in this family of Heliodors? What is Helen's genotype? O Not enough information to determine aa (homozygous recessive) Aa (heterozygous) O AA (homozygous dominant)arrow_forward
- You are excited to be entering the world of chinchilla breeding! At the most recent chinchilla pet event you purchased a lovely grey chinchilla with large ears. You do some research and learn that Grey is dominant to white (Gg), and large ears are dominant to small (Ee). Your chinchilla breeding mentor has many combinations of chinchillas and he gives you a one-time offer to breed with any of this chinchilla! List all of the possible genotypes for your chinchilla: How could you determine which of these is the genotype of your chinchilla? How do we call this type of mating?arrow_forwardWhat are the phenotype ratios observed for F2? Seed Type Initial Number of Seeds Number of Seedlings Seedlings Without Purple Pigment Seedlings With Purple Pigment Seedlings With Green Leaves Seedlings With Yellow-Green Leaves Recessive Trait Dominant Trait Dominant Trait Recessive Trait P1 10 10 10 0 10 0 P2 10 9 0 9 5 4 F1 10 10 3 7 3 0 F2 30 30 15 15 15 15arrow_forwardB = blue b = green. A male green coral (bb) was crossed with a blue female coral (Bb). Remember, males are on top of the Punnett square (bb). Create a Punnett square for the cross: bb x Bbarrow_forward
- Why are Irish setters not black in color?arrow_forwardMendelian Genetics Worksheet Name Hour Fill in the Punnett squares for each cross given to determine the phenotype and genotype ratio's of the offspring Crosses with one homozygous dominant parent: AA x AA A AA x Aa A АА х а A AA x aa A A A A A a A a a Offspring Genotypes: AA AA AA Aa Offspring Phenotypes: Aa Aa aa aa aa Dominant Dominant Recessive Dominant Recessive Recessive_ _ Crosses with one heterozygous parent: Aа х АА Аа х Аа Аа х аа A a A a A a A a A a a Offspring Genotypes: AA_ Aa_ aa AA Aa aa AA_ Aa aa Offspring Phenotypes: Dominant Recessive Dominant Dominant Recessive Recessive _ Crosses with one homozygous recessive parent: aa x AA aa x Aa аа х аа a a a a a a A A a A a a Offspring Genotypes: AA Aa_aa AALAA_aa AA Aa_ aa_ Offspring Phenotypes: Dominant Dominant Dominant Recessive_ Recessive_ Recessive _arrow_forwardplease fill out both tables for the genotypesarrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education, 
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education