Genotype of carrier mother - XHXh.
Genotype of normal father - XHY.
Cross between carrier mother and normal father.
Parent generation XHXh X XHY
Gametes formed XH and Xh XH and Y.
Next generation
Mother/ Father gametes | XH | Y |
XH | XHXH(Normal female) | XHY(Normal male) |
Xh | XHXh(Carrier female) | XhY(Hemophiliac male) |
is caused by a single gene that is located on the X chromosome. Because human females...
Mendelian Genetics The gene involved in the disease Sickle Cell Anemia (SCA) is on human chromosome 11. Allele “A” is the normal form of the gene and codes for a part of the protein complex called hemoglobin. Hemoglobin is required for your blood cells to carry oxygen. Allele “a” is an abnormal form of the gene. The hemoglobin protein made from the “a” allele is defective. Red blood cells containing the defective protein are very fragile. This disease is recessive–meaning...
8. The F8 gene is located on the X chromosome. It is used by cells in the liver to produce coagulation factor VIII that is released into the bloodstream where it functions in blood clotting. An inability to produce this protein is a common cause of hemophilia. A woman inherited a null allele (no functional product from her father, and a functional allele from her mother. a. Does this woman produce the coagulation factor? (mark answer with an X) No...
1. For each of the following blood types, list the possible genotypes: Phenotype Possible Genotypes A B AB O 2. Dr. Paul is blood type O. His father was blood type A and his mother was blood type B. What were the genotypes of his parents? What are the possible blood types and phenotypic ratios expected for a cross involving these parental genotypes? 3. In the ABO blood system in human beings, alleles A and B are codominant and both are...
10. Red green colorblindness is an X-linked recessive disease. That means that it is carried on the X chromosome, so men have just one copy of the gene while women have two. In women, both copies must be the recessive disease allele in order to show the disease phenotype, but because men only have one allele, just one recessive allele causes the disease phenotype. Matt and Kate both have normal vision, but Kate's father is colorblind. Use X for the...
need help with 1 and 2 please. X-linked Recessive Traits Review X-linked traits in your textbook. 1 In cars, the Ballele produces black fur & b produces orange fur. This gene is X-linked (X & X". Both colors are expressed in heterozygotes calico). If alcat has 2 calico kittens, 1 male black kitten, and I female orange kitten, what is the ty p henotype of the father cat? (Hint: Work backwards & use a Punnett square Remember that not every...
6. If you cross a woman with type A blood and a man with type B and both ha dominant and one recessive allele for blood type what are the possible genotypes of their offspring? Use the Punnett square below to help you determin etermine this. 7. Choroideremia is a disease that causes degeneration of the retina of the eye. The recessive allele that causes this condition is found on the X chromosome. Using the square below, cross a woman...
Given that TP53 is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without the recessive gene? Given that is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without...
A mother is heterozygous for an over-expressed plastin allele on her X chromosome, thus has longer than normal axons. She is also heterozygous for the SMN1 gene on chromosome 5. Her children’s father is normal for plastin and has normal length axons. He too is heterozygous for the SMN1 gene. Both genes influence spinal muscular atrophy type 1 (SMA1); two abnormal copies of the SMN1 gene are required to cause spinal muscular atrophy, but their effect is prevented by high...
5. Show the cross of a red eyed female (heterozygous) and a red eyed male What are the genotypes of the parents? How many of the offspring are white eyed, male white eyed, female red eyed, male red eyed, female 6. In humans, hemophilia is a sex linked trait. Females can be normal, carriers, or have the disease. Males will either have the disease or not (but theywon'tever be carriers) XHXH=female, non-hemophilic X H X h female, carrier Xh Xh-...
question 5-52 93 Dd D) dd D) aa x aa C) human height E) DI 4.Which of these crosses will only produce heterozygous offspring? B) AA x Aa C) Aa x Aa E) Aa x aa 5. Which of the following human traits is an example of codominance? A) sickle-cell anemia D) AB blood type B) variation in eye color 6. Which of the following is true regarding an individual who has inherited one sickle-cell gene and one normal gene...