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Which of the following explains why most sex-linked characteristics are X-linked instead of Y-linked?
Group of answer choices
A All the genes on the Y chromosome are recessive
B The X chromosome has more genes than the Y chromosome
C Genes on the Y chromosome contain more mutations than on the X chromosome
D There are no YY genotypes
In humans and mammals the sex is determined by the chromosomes X and Y. For female it will be two X chromosomes but for male it will be one X and one Y chromosome. Since males have only one X chromosome, if any trait in X is recessive, he will have recessive or diseased trait. On the other hand, females have 2 X chromosomes and thus may have dominant trait say W if it is WW or Ww. More over the X linked disease is seen more in males compared to females due to the presence of one copy of X chromosome in males.
Which of the following explains why most sex-linked characteristics are X-linked instead of Y-linked? Group of...
Name Sex-linked traits are genetic char segments of DNA found on chromosomes that Sex-Linked Traits Senetic characteristics determined by genes located on sex chromosomes. Genies are and on chromosomes that carry information for protein production and that are sponsible for the inheritance of specific traits Genes exist in alternative forms called alleics. or a trail is inherited from each parent Like traits originating from genes on autosomes (non-se chromosomes), sex-linked to omosomes), sex-linked traits are passed from parents to offspring...
Which one of the following discoveries resulted in a Nobel Prize? (a) X-rays induce sex-linked recessive lethal mutations (b) eytoplasmic inheritance (c) recombination of linked genes (d) genetic engineering
In a ZZ-ZW sex determination system, males are ZZ and females are ZW. Which sex is going to be most affected by mutations on the Z chromosome? Group of answer choices a Males will be more affected b Females will be more affected c Additional information is needed to answer this question d Females and males will be equally affected
Look carefully at the pedigrees below and: 1) indicate whether the transmission appears autosomal or sex-linked 2) indicate whether the transmission appears dominant or recessive 3) provide at least two characteristics for each that support your conclusion. In general, the following characteristics suggest (but do not prove) specific inheritance patterns: Autosomal recessive inheritance: -affected individuals can be born to unaffected parents -if both parents are affected, all children are affected -observable effect of relatedness (consanguinity) -horizontal" inheritance: trait appears at...
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...
Which of the following explains an inherited disease that affects women and not men? Group of answer choices a A mutation in a gene on an autosome b A mutation in a gene on the Y chromosome c Additional information is needed to answer this question d A mutation in a gene on the X chromosome
A sex-linked gene is traditionally... Multiple Choice A. a gene that is turned on (makes protein) only when the female hormone estrogen is present. B. a gene on the X chromosome that encodes traits seen only in females. C. a gene found on any chromosome; they are X-shaped when they are metaphase chromosomes. D. a gene that encodes traits seen only in females. E. a gene on the X chromosome. In fruit flies, white eyes is caused by a sex-linked...
#7a, b, c, d Look at the following pedigree for a sex-linked trait to answer the questions below. a) Is the allele for this trait found on the X or the Y chromosome? __________ b) Is this a dominant or a recessive trait? ___________ c) Give the genotype of all the individuals d) If individual A has children with an unaffected male, what are the chances that her children will have the trait? e) Individual B marries an unaffected woman....
answer only In humans, sex-linked traits (example: colorblindness) are carried by the Y sex chromosome. Select one: a. True b. False The gene for human blood types occurs in more than two alternative forms. Which of the following situations specifically describes this type of inheritance? Select one: a. multiple alleles b. lack of dominance c. nondisjunction d. complete dominance e. incomplete dominance
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.