It’s very rare for someone with two X chromosomes to have DMD. Explain how a person with two X chromosomes could have the symptoms of DMD using what you know about inheritance and random mutation.
Q: 2. Curly hair is recessive, and straight hair is dominant. A woman with curly hair marries a man who…
A: A dominant allele expresses itself in both homozygous and heterozygous condition.
Q: 1. How many copies of an X-linked gene does a male have? 2. Will a male be able to give his X-linked…
A: DISCLAIMER : Since you have posted a question with multiple sub-parts, we will solve first three…
Q: 1. A mother with blood type A has a child with blood type O, and she claims that Mister X is the…
A: The presence and absence of antibodies and inherited antigenic substances on the surface of red…
Q: 2. The pedigree chart below illustrates the inheritance of a trait (darker symbols) in two families…
A: A pedigree is a branched diagram which represents the inheritance of a trait across generations in a…
Q: 3. The father shown beiow has Hemophilia, an X-linked recessive disorder. If this couple had a son,…
A: ANS- If the father has hemophilia and the mother does not carry hemophilic gene, then no son (XY)…
Q: 5. Consider the following pedigrees. Each represents inheritance of a recessive phenotype. Explain…
A: Pedigree analysis is the diagrammatic representation which represents family history of individuals…
Q: 4. Show a cross between a pure red eyed female and a white eyed male. What are the genotypes of the…
A: The genetic traits of an organism are referred to as a genotype. Physical features are referred to…
Q: 1. What is the blending theory of inheritance? Name an example of genetics (that you've noticed in…
A: Introduction: The mechanism in which the parental traits are copied into the offspring belonging to…
Q: 6. The pedigree below traces the inheritance of a particular disorder. Circles are females, squares…
A: The tabular representation of family history by taking into consideration a disease or character…
Q: 4. The couple shown by the pedigree shown below, have 2 children, 1 girl with the disease and 1 boy…
A: X linked recessive trait is the type of trait that is inherited by the female child only if both the…
Q: 1) explain how differences in gene expression of genetically similar organism can result in…
A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 3) The most likely inheritance pattern in the pedigree above is:
A: Pedigree analysis is study of any kind of population and its progeny data of several generation of a…
Q: 2. Assuming complete penetrance, which type of inheritance pattern is consistent with the pedigree…
A: Pedigree is a diagrammatic representation of either phenotypes or genotypes of a particular organism…
Q: 2. Lucy has fair (light) skin, red and wavy/curly hair. Use the model of her parents' genes above to…
A: The process of inheritance involves the transmission of genetic information from parents to progeny.…
Q: Albinism in humans is controlled by a recessive gene (c). From marriages between two normally…
A: Albinism is the genetic disease occured due to abnormal melanin production. Melanin produced is…
Q: 13. A dominant x-linked allele (B) gives normal color vision but the recessive allele (b) causes…
A: Please follow steps 2,3,4 for detailed explanation.
Q: 6. Color blindness is a recessive X-linked trait (a). A woman whose father is colorblind possesses…
A: As colourblindness is an X linked recessive diseases.So, XcXc = Homozygous recessive ,Colourblind…
Q: 5. Rather than studying you are watching Maury. A couple comes on with a baby. The father has brown…
A: The inheritance of characters in the children depend on the characteristics of the parents. This is…
Q: a man has simpson syndrome, an addiction to certain television series. his wife does not have this…
A: ss x Ss Father with Simpsons syndrome x carrier mother S s s Ss ss s Ss ss 50%…
Q: 3. Cross a man with type B heterozygous blood with a woman with type O blood. What are the possible…
A: Introduction :- A blood type is a type of blood classification based on the presence or absence of…
Q: 2)If an individual that is homozygous dominant for a gene has offspring with an individual that is…
A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…
Q: A woman is color blind. If she marries a man with normal vision, What are the chances of her a.…
A: Inheritable material is carried forward from the preceding generation to the succeeding generations.…
Q: 4. Mrs. Essy is type "A" and Mr. Essy is type "O." They have three children named Matthew, Mark, and…
A: ABO blood type: Human red blood cells will possess proteins of Type A, B, or both, and…
Q: 1. What is a pedigree? 2. In a pedigree chart, how would you know if the individual manifesting the…
A: The pedigree analysis involves the development of a kindred that may be accustomed trace the…
Q: . Give an example of a phenotype and a gene or genes associated with it.
A: Given: Genetics is the branch of biology that deals with the study of heredity and variation. Father…
Q: 4) A testcross is used to determine which of the following? a) The phenotype of an individual with…
A: In diploid organisms, the phenotype is expressed when one allele (alternative form of a gene) is…
Q: 1. How many different gamete combinations are possible with the genotype: AABBCCDD 2. This type of…
A: Genotype : It is the complete set of genome of an organism. The genotype is one of three factors…
Q: 6. A pedigree is a useful tool for determining human inheritance patterns. Use the pedigree below to…
A: The inheritance of a character or a particular phenotype from parent to progeny due to the presence…
Q: 2. Fill out the blanks of the pedigree (AA, Aa, or aa). a) How many children did the original couple…
A: Note - The first question is not complete. So solving question - 2 for you. Question-2 Given: A…
Q: 4. Choose one type of Non-Mendelian Pattern of Inheritance and explain how a trait is inherited by…
A: Introduction: Non-mendelian disorder is a pattern of inheritance where segregation of traits does…
Q: 6. Everyone in Squidward's family has light blue skin, which is the dominant trait for body color in…
A: In the question, the cross is made between two individuals. One individual belongs to Squidward'…
Q: 2If an organism has a dominant phenotype for a trait, what is its genotype? A. The genotype is…
A: Genotype- is defined as the genetic make up of an individual Phenotype- Is defined as the physical…
Q: A pair of genes AB are completely linked together, so they are tightly linked. Give the genotypic…
A: The genotypic ratio is the ratio depicting the different genotypes of the offspring from a test…
Q: 4. Colorblindness is an X-linked trait caused by a recessive allele. A carrier female marries a…
A: Color-blindness is an X-linked recessive trait males have only one X chromosome and presence of…
Q: 1. Which of the following describes part of a phenotype? A. Gg B. homozygous C. having freckles D.…
A: Phenotype refers to the physical characteristics of an organism.
Q: 1. An albino man whose parents are both normal marries a woman one whose parents is normal and the…
A: Introduction Albinism is an inherited condition that leads to someone having very light skin, hair,…
Q: When examining a pedigree chart, I notice that only males are affected. What does this tell me…
A: In humans, the controlled crosses can not be created, thus geneticists should resort to scrutinizing…
Q: 1. A cross between a black cat and a tan cat results in a tabby cat. A tabby cat is crossed with a…
A: 1. (a) It is incomplete dominance.
Q: 2. Identify the type of trait(s) in the pedigree below * autosomal recessive autosomal dominant…
A: Inheritance pattern is a pattern which determines how the genes are inherited from parental…
Q: 6. Everyone in Squidward's family has light blue skin, whieh is the dominant trait for body color in…
A: *Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: 5. Which of the following statements describe the codominant mode of inheritance? A straight haired…
A: Codominance is the condition where neither allele can mask the expression of the other, that is,…
Q: 1. In man, normal color vision vs. red green colorblindness is controlled by C (dominant) and e…
A: Recessive and dominant traits are the one who makes phenotype of an individual. Recessive will…
Q: А в F C D E H G J K L
A: B, C, H, J, L will all be carrier.
Q: 1. A allele overshadows the effect of a allele. 2. If only one chromosome carries a dominant allele,…
A: INTRODUCTION Dominant trait The character that is expressed in an individual is called dominant…
Q: 3. Red-green color blindness (b) is a recessive sex-linked trait. A colorblind male marries a normal…
A: * Red-green color blindness is also called as deuteranopia. * The affected individuals having this…
Q: 5. The pedigree below traces the inheritance of Albinism, a genetic disorder. Affected individuals,…
A: Albinism is a genetic condition where the cells lose the ability to produce melanin. Melanin is a…
Q: 7. Joe does not have a bent little finger but his parents do. a. Assuming that one gene completely…
A: Dominant trait can be expressed in a homozygous or hetreozygous condition whereas recessive trait…
Q: 3. Pattern baldness is a recessive sex-linked trait. Jake has a full head of hair. His wife Jeannie…
A: It is required to determine the genotype of Jeannie and the chances that the children will have…
Q: 4. What mode of inheritance is shown in the pedigree chart on the left? Justify your answer. 5.…
A: Pedigree is a branching representation indicating family members of everi generation . Pedigree…
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- 12. Hemophilia is an x-linked disease in which the blood does not clot normally; it is sometimes called “bleeder’s disease.” Hemophilia is caused by a recessive allele (h). The dominant allele (H) produces blood that clots normally. A. What is genotype of a man who is a hemophiliac? B. What is the genotype of a man with normal blood clotting? C. What is the genotype of a woman with normal clotting blood if her father was a hemophiliac? D. If a man with normal clotting blood and a heterozygous woman have children together, what would you expect for the genotypes and phenotypes of the children?4. Marfan syndrome is a genetic trait caused by in a dominant allele. The trait causes a weakening of the aorta that can be fatal. A teenager whose mother has the syndrome (but whose maternal grandfather was not affected), and whose father was unaffected, is concerend that she may have the trait. a. What is the phenotype of each of her parents? Genotype? b. What is the chance that the teenager has Marfan syndrome?5. A female child, Della, has the autosomal dominant condition of polydactyly. Della's mother has the normal number of fingers and toes like her parents and brother (Della's maternal grandparents and uncle). Della's father has six fingers on each hand and so did two of his three sisters and his mother (Della's paternal aunt and grandmother). Della has a younger brother who has the normal number of fingers and toes. Give the genotype of each parent and each child. Della's Mother Della's Father Della Della's Brother 5. Draw a pedigree demonstrating polydactyly in the family above. 7
- 3. Sickle cell disease is an autosomal recessive genetic disorder that affects the shape of red blood cells. The disease is caused by a mutation in the HBB gene, which encodes for hemoglobin. Hemoglobin is responsible for carrying oxygen throughout the body. In sickle cell disease, the mutation causes the hemoglobin to form into a crescent or sickle shape, making the red blood cells stiff and sticky. This can cause blockages in blood vessels, leading to pain, organ damage, and a decreased lifespan. Given the severity of the phenotype, you would expect the frequency of the sickle cell allele to be very low. However, in populations in Africa where malaria is prevalent, the allele frequency is maintained at higher than expected frequencies. You examine a population of individuals living in an area where the risk of contracting malaria is high and find that there are 24 homozygous dominant, 70 heterozygous, and 6 homozygous recessive individuals. a. Is this population in Hardy-Weinberg…4. In humans, the gene for color blindness is on the X-chromosome. Color blindness is recessive (X) while normal color vision is dominant (XC). Two normal-vision parents produce a color-blind son. What are the genotypes of the parents? What are the chances of their next child being a color-blind daughter?8. Huntington’s disease is a degenerative disease of the nervous system that strikes in middle age. The allele that causes the disease (H) is dominant to the allele that results in the normal condition (h). Answer the following questions about the inheritance of this disease. A. What is the genotype of a man who is normal but whose father had Huntington’s disease? B. What is the genotype of a woman who has Huntington’s disease if both of her parents had Huntington’s disease? C. If a man who is heterozygous for Huntington’s disease marries a woman who is normal, what would you expect for the genotypes and phenotypes of their children? D. If a normal man marries a woman who is homozygous for Huntington’s disease, what do you expect for the genotypes and phenotypes of their children?
- 2. Imagine that you are in your late 30s or early 40s and decide that you want a child. You realize that you’re at greater risk of having a child with Down’s Syndrome. What sorts of genetic screening are available today? If you find out that this child has this condition, do you think it’s appropriate to have an abortion? Why or why not? Question: Does elective abortion of fetuses with physical or other developmental disabilities have an effect on the perception of personhood, dignity, and rights in society? Explain.11. Blood type is controlled by a gene with multiple alleles. A produces type A blood. B codes for type B blood. A and B are codominant so a heterozygote has type AB blood. The O allele is recessive to both A and B and produces type O blood. A. What are the possible genotypes of a man with type A blood? B. What are the possible genotypes of a man with type B blood? C. Can a man with type B blood be the father of a baby with type O blood? Why or why not? Explain your answer. D. A man with type A blood marries a woman with type B blood. What blood types are possible for their children? Explain your answer. E. A man with type O blood is in a car accident and has to receive a transfusion at the hospital. What types of blood can he receive? F. In the Charlie Chaplin paternity case of the 1940s, a young woman sued Chaplin for child support, claiming he was the father of her child. Chaplin’s blood was type O, the mother was type A and the baby was type B. Could…5. Red-Green colour blindness is inherited as an X-linked recessive trait in humans. A woman, who’s mother had red-green colour blindness marries a colour blind man. What are the chances that their child will be: 1. a colour-blind male? 4. a normal male? 2. a colour blind female? 5. a normal female? 5. The couple has a colour blind male child. What are the chances that their next child will be a normal female?
- 11. Blood type is controlled by a gene with multiple alleles. A produces type A blood. B codes for type B blood. A and B are codominant so a heterozygote has type AB blood. The O allele is recessive to both A and B and produces type O blood. A. What are the possible genotypes of a man with type A blood? B. What are the possible genotypes of a man with type B blood? C. Can a man with type B blood be the father of a baby with type O blood? Why or why not? Explain your answer. D. A man with type A blood marries a woman with type B blood. What blood types are possible for their children? Explain your answer. E. A man with type O blood is in a car accident and has to receive a transfusion at the hospital. What types of blood can he receive? F. In the Charlie Chaplin paternity case of the 1940s, a young woman sued Chaplin for child support, claiming he was the father of her child. Chaplin’s blood was type O, the mother was type A and the baby was type B. Could…6. Hemophilia causes severe bleeding from minor wounds. The blood is unable to clot properly because one of the factors necessary for clotting is missing. Hemophilia is an inherited sex-linked recessive disorder transmitted on the X chromosome by mothers to their sons. i) A woman inherited the gene for hemophilia from her mother and marries a man who iş normal and has no hemophilia. What is the possibility that her children can have hemophilia?4. The couple shown by the pedigree shown below, have 2 children, 1 girl with the disease and 1 boy without the disease as shown. What is the mode of inheritance? (is the disease autosomal recessive, autosomal dominant, or X-linked recessive?) Explain why you think this. Fill in the genotypes to help you answer this.