Ans.26. Option B is the correct answer.
EXPLANATIONS:- The X linked recessive disease are always most probably occurs in the males as only one X chromosome with recessive trait is required in males for expression of the trait. But in case of the female, the trait should be present on both the X chromosome, so they are most carrier. So no female will be Ichthyosis. All females will be carrier but all Male will be diseased. So probability is zero percent.
Ans. 27. Option D is the correct answer.
EXPLANATIONS:- If there would be no inactivation of the X chromosome in female , there will be a more expression of the X linked gene in the females.
citruscollege. E. C LUJ Question 26 Icthyosis, which causes scaly skin, is an X-linked recessive trait....
36. In X-linked recessive inheritance, which of the following is not true? A. They appear much more frequently in males vs. females. B. Genes for sexed linked disorders are usually carried on the X chromosome. C. Females are typically carriers of disease, but do not show an affected phenotype. D. Affected males can pass the gene to their daughters, but they (daughter) are usually unaffected. E. All of the above are true.
SEX-LINKAGE Red-Green color-blindness is sex-linked X-linked recessive trait. A normal sighted woman whose father is color- blind marries a color-blind man. they have 20 children. Of those 20, 6 are normal sighted females, 5 are color-blind females, 4 are normal sighted males and 5 are color-blind males. 7. What are the genotypes of the parents and all the children? 8. Theoretically, what would be the genotypic and phenotypic ratios of the offspring?
trait. 8 A trait coded for by genes on chromosomes 1 through 22 is a/an 9 A trait coded for by either the X or the Y chromosome is a/an 10 A genetically simple trait is coded for by alleles at only 11 What is the term for a trait coded for by alleles at multiple loci? locus. trait. trait. 12 if the various phenotypes of a trait can be placed into categories, it is a/an 13 If you can...
Need help with 12-15. thanks trait trait 12 If the various phenotypes of a trait can be placed into categories, it is a/an 13 If you can measure the phenotypes of a trait along a continuum, it is a/an 14 Albinism, sickle cell, and PTC tasting are all on chromosomes other than Xor Y. traits because their genes are found 15 Females can be homozygous dominant, heterozygous, or homozygous recessive for an X-linked trait. Males are always for X-linked traits...
NAME: 6. Red-green color deficiency is an X-linked recessive trait. A woman with normal color vision has a father who is color-deficient. The woman has a child with a man with normal color vision. Which phenotype is NOT expected as a possibility for that child? a) a color-deficient male b) a color deficient female c) a male with normal color vision d) a female with normal color vision 7. Which of the individuals in the human pedigree shown below allow...
Colorblindness is a sex-linked X-linked recessive trait. A normal woman marries a color-blind man. They have a color-blind daughter. What are the genotypes of all three people?
7.) Haemophilia is an X-linked recessive disorder. If a male haemophiliac mates with a normal (non-haemophiliac) homozygous woman, would the progeny be affected? a. All males would be carriers. All females would be normal. b. All males would be normal. Half of the females would be carriers and half of the females would have haemophilia. c. All males would be normal. All females would be carriers. d. Half of each sex would be normal and half of each sex would...
Both have trait Neither have trait X-linked recessive Daughter Son Mom has trait Dad has trait Both have trait Neither have trait X-linked male-limited Daughter Mom has trait Dad has trait Both have trait Neither have trait Son Imprinting Daughter Son Mom has trait Dad has trait Both have trait Neither have trait Polygenic Daughter Son Mom has trait Dad has trait Both have trait Neither have trait 2. You nip a penny, a nickel, a dime and a quarter....
Hemophilia is a sex-linked X-linked recessive trait. A homozygous normal woman marries a normal man whose brother has hemophilia. What are the chances of them having a hemophiliac son; hemophiliac daughter?
Hemophilia in humans is a recessive sex-linked trait. A man with hemophilia and a woman who does not have hemophilia have a daughter who does not have hemophilia. She then marries a man who does not have hemophilia. What is the probability that their first child will be a daughter with hemophilia? A daughter without hemophilia? A son with hemophilia? A son without hemophilia? If the couple has four sons, what is the probability that all four will be born...