3.5.4.3. Sex-linked inheritance (two characters)

Inheritance linked to sex (two characters). (Page 20)

Problems involving inheritance linked to sex together with another trait determined by a gene on an autosomal chromosome may also appear. The procedure for its resolution will be the same as we have seen so far.

Genetics problem 155

The albinismis caused by a recessive gene, whereas normal pigmentation is determined by a dominant gene. TheHemophilia is caused by a recessive gene linked to the X chromosome

What types of children and in what proportions can a non-hemophilic albino man have with a normally pigmented woman whose father was a non-albino hemophilic and her mother was a non-hemophilic albino?

Genetics problem 156

In the vinegar fly, the short wings (a) are recessive recessive with respect to the normal character, the long wings (A); and the gene for this wing-size trait is autosomal. In the same insect, the white color of the eyes (b) is produced by a recessive gene located on the X chromosome, with respect to the dominant red color (B).

A female, homozygous for both characters, with long wings and white eyes, is crossed with a male with long wings and red eyes, a descendant of a male with short wings.

a. Give the genotypes of the parents of the cross and their offspring.

b. What proportion of females will be heterozygous for the two characters?

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Skip navigation Biology and Geology 4th ESO Biology and Geology 4º ESO 1. The cell 1.1. Levels of organization of living beings 1.2. Cell theory 1.3. The cell 1.3.1. Prokaryotic cell 1.3.2. Eukaryotic cell 1.3.2.1. Common organelles 1.3.2.2. Organelles of the animal cell 1.3.2.3. Plant cell organelles 1.4. Cell nucleus 1.5. Vital functions of cells 1.6. Cellular cycle 1.6.1. Mitosis 1.6.1.1. Cytokinesis 1.6.2. Meiosis 1.6.2.1. Meiosis I. First meiotic division 1.6.2.2. Meiosis II. Second meiotic division 1.6.2.3. Result of meiosis 1.6.3. Differences between mitosis and meiosis 1.6.4. Biological importance of mitosis and meiosis 1.7. Bibliography 2. Genetic information 2.1. Nucleic acids 2.1.1. DNA 2.1.2. RNA 2.1.3. Control of protein synthesis 2.2. DNA and molecular genetics 2.3. Gene concept 2.4. Replication of DNA 2.5. DNA to RNA transcription 2.6. Genetic code 2.7. Translation of RNA to proteins 2.8. Mutations Relations with evolution 2.9. Biotechnology 2.10. Genetic engineering: techniques and applications 2.10.1. Cloning 2.10.2. Human Genome Project 2.11. Bioethics 2.12. Bibliography 3. Biological inheritance 3.1. The inheritance and transmission of characters 3.2. Introduction and development of Mendel's Laws 3.2.1. Mendel's First Law 3.2.2. Mendel's second law 3.2.3. Mendel's third law 3.3. Chromosomal basis of Mendel's Laws 3.3.1. Exceptions to Mendel's Laws 3.3.2. Chromosomal theory of heredity 3.3.3. Genetics concepts 3.3.4. Types of inheritance 3.4. Human genetics 3.4.1. Inheritance of blood groups 3.4.2. Sex inheritance 3.4.3. Sex-linked inheritance 3.4.4. Heredity influenced by sex 3.5. Genetics problems 3.5.1. Inheritance of a character (problems solved) 3.5.1.1. Albinism (problems solved) 3.5.1.2. Rh groups (problems solved) 3.5.1.3. Eye color (problems solved) 3.5.1.4. More inheritance problems of a character 3.5.1.5. More inheritance problems of a character 3.5.1.6. More inheritance problems of a character 3.5.1.7. More inheritance problems of a character 3.5.2. Two-character inheritance (problems solved) 3.5.2.1. More two-character genetic inheritance solved problems 2 3.5.2.2. More two-character genetic inheritance solved problems 3 3.5.2.3. More two-character genetic inheritance solved problems 4 3.5.2.4. More two-character genetic inheritance solved problems 5 3.5.3. Codominance and intermediate inheritance (problems solved) 3.5.3.1. More codominance and intermediate inheritance problems 2 3.5.4. Sex-linked inheritance (problems solved) 3.5.4.1. Color blindness or daltonism (problems solved) 3.5.4.1.1. More color blindness problems or daltonism 3.5.4.2. Hemophilia (problems solved) 3.5.4.3. Sex-linked inheritance (two characters) 3.5.4.4. More sex-linked inheritance problems 3.5.5. Sex-influenced inheritance (problems solved) 3.5.6. Multiple alleles (problems solved) 3.5.6.1 AB0 blood groups (problems solved) 3.5.6.1.1. More AB0 blood group problems solved 2 3.5.6.1.2. More AB0 blood group problems solved 3 3.5.7. Genealogical trees 3.5.7.1. Family Trees 2 3.5.7.2. Family Trees 3 3.6. Bibliography 4. Origin and evolution of living beings 4.1. Hypothesis about the origin of life on Earth 4.2. Evolution of living beings 4.3. Theories of evolution 4.3.1. Lamarck 4.3.2. Darwin and Wallace 4.3.3. Neo-Darwinism 4.3.4. Other evolutionary theories 4.4. Evidences of evolution 4.4.1. Anatomical evidence of evolution 4.4.2. Embryological evidence of evolution 4.4.3. Paleontological evidence of evolution 4.4.4. Biogeographic evidence of evolution 4.4.5. Biochemical evidence of evolution 4.5. Mechanisms of evolution 4.5.1. Genetic variability 4.5.2. Natural selection 4.5.3. Consequences of evolution 4.5.3.1. Adaptation of organisms 4.5.3.2. Speciation 4.5.3.3. Species diversification 4.6. Human evolution: process of hominization 4.6.1. Primates 4.6.2. Hominids 4.6.3. The human being 4.7. Bibliography 5. The history of the Earth 5.1. The origin of the Earth 5.2. Earth, a changing planet 5.3. Geological time: historical ideas about the age of the Earth 5.4. Dating methods 5.4.1. Relative dating 5.4.1.1. Geological history exercises - relative dating 5.4.2. Absolute dating 5.5. Fossils 5.5.1. Fossils in Aragon 5.6. Geological history of the Earth 5.6.1. Precambrian 5.6.2. Phanerozoic 5.6.2.1. Paleozoic 5.6.2.2. Mesozoic 5.6.2.3. Cenozoic 5.7. Bibliography 6. Structure and dynamics of the Earth 6.1. Earth study methods 6.1.1. Seismic discontinuities 6.2. Structure and composition of the Earth 6.2.1. Geochemical model 6.2.2. Dynamic model 6.3. Bibliography 7. Plate tectonics 7.1. From continental drift to plate tectonics 7.1.1. Wegener continental drift 7.2. Plate Tectonics and its manifestations 7.2.1. Lithospheric plates 7.2.2. Oceanic ridges 7.2.2.1. Expansion of the ocean floor 7.2.3. Ocean trenches 7.2.4. Transforming faults 7.2.5. Formation of mountain ranges 7.3. The Wilson cycle 7.4. Rock deformation 7.4.1. Folds 7.4.2. Faults 7.4.3. Joints 7.4.4. Mixed structures 7.5. Bibliography 8. Ecosystems 8.1. Ecosystem structure 8.1.1. Types of ecosystems 8.1.1.1. Aquatic ecosystems 8.1.1.2. Terrestrial ecosystems 8.1.1.2.1. Urban ecosystems 8.2. Components of the ecosystem: community and biotope 8.2.1. Biotope 8.2.2. Biocenosis or community 8.3. Habitat and ecological niche 8.4. Limiting factors and adaptations 8.5. Tolerance limit 8.6. Trophic levels 8.7. Trophic relationships: chains and networks 8.8. Ecological pyramids 8.9. Self-regulation of the ecosystem, the population and the community 8.9.1. Intra and interspecific relationships 8.10. Matter cycle and energy flow 8.11. Biogeochemical cycles 8.11.1. Carbon cycle 8.11.2. Nitrogen cycle 8.11.3. Phosphorus cycle 8.12. Ecological successions 8.13. Bibliography 9. Resources and environmental impacts 9.1. Human activity and the environment 9.2. Natural resources and their types 9.3. Environmental impacts 9.3.1. Pollution of the atmosphere 9.3.1.1. Air pollutants 9.3.1.2. Acid rain 9.3.1.3. The smog 9.3.1.4. Ozone layer hole 9.3.1.5. Increased greenhouse effect 9.3.1.6. Climate change 9.3.2. Noise pollution 9.3.3. Light pollution 9.3.4. Water contamination 9.3.4.1. Water pollutants 9.3.4.2. Water eutrophication 9.3.4.3. Aquifer reduction 9.4. Soil 9.4.1. Soil contamination 9.5. Main environmental problems of Aragon 9.6. Overpopulation and its consequences 9.7. Waste and its management 9.8. Bibliography and student work « Previous \| Next » 3.5.4.3. Sex-linked inheritance (two characters) Inheritance linked to sex (two characters). (Page 20) Problems involving inheritance linked to sex together with another trait determined by a gene on an autosomal chromosome may also appear. The procedure for its resolution will be the same as we have seen so far. Genetics problem 155 The albinismis caused by a recessive gene, whereas normal pigmentation is determined by a dominant gene. TheHemophilia is caused by a recessive gene linked to the X chromosome What types of children and in what proportions can a non-hemophilic albino man have with a normally pigmented woman whose father was a non-albino hemophilic and her mother was a non-hemophilic albino? Feedback C: normal color c: albinism X^H: normal X^h: hemophilia Grandparents X^hY C_ X X^H _ cc P X^HY cc x X^HX^h Cc Gametes X^Hc Yc X^HC X^Hc X^hC X^hc F1 X^HX^HCc X^HX^Hcc X^HX^hCc X^HX^hcc X^HYCc X^HYcc X^hYCc X^hYcc X^HX^HCc: 1/8 non-hemophilic female with normal pigmentation X^HX^Hcc: 1/8 non-hemophilic female with albinism X^HX^hCc: 1/8 non-hemophilic female with normal pigmentation X^HX^hcc: 1/8 non-hemophilic woman with albinism X^HYCc: 1/8 non-hemophilic male with normal pigmentation X^HYcc: 1/8 non-hemophilic male with albinism X^hYCc: 1/8 male hemophilic with normal pigmentation X^hYcc: 1/8 male hemophilic with albinism Genetics problem 156 In the vinegar fly, the short wings (a) are recessive recessive with respect to the normal character, the long wings (A); and the gene for this wing-size trait is autosomal. In the same insect, the white color of the eyes (b) is produced by a recessive gene located on the X chromosome, with respect to the dominant red color (B). A female, homozygous for both characters, with long wings and white eyes, is crossed with a male with long wings and red eyes, a descendant of a male with short wings. a. Give the genotypes of the parents of the cross and their offspring. b. What proportion of females will be heterozygous for the two characters? Feedback aa P Female dihomozygous Male red eyes and long wings X^bX^bAA x X^BYAa Gametes XbA X^BA X^Ba YA Ya F1 X^BX^bAA X^BX^bAa X^bYAA X^bYAa X^BX^bAA, X^BX^bAa: 50% red-eyed, long-winged females X^bYAA, XbYAa: 50% red-eyed, long-winged males 50% of females will be heterozygous for both traits Licensed under the Creative Commons Attribution Share Alike License 4.0 « Previous \| Next » You can ask, comment, contribute, get in touch with other users in the forum of this course. This course is translated from https://biologia-geologia.com/BG4/
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Inheritance linked to sex (two characters). (Page 20)

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