1) The sex-linked genetic disease, hemophilia, manly occurs in males and the gen
ID: 210076 • Letter: 1
Question
1) The sex-linked genetic disease, hemophilia, manly occurs in males and the gene responsible for the disease is localized on a) Y-chromosome x-chromosome c) Autosome #22 d) On both X&Y; chromosomes of the male e) t is an autosomal dominant trait of males 2) A sex-influenced trait is one that occurs a) in both sexcs b Mainly in females Mainly in males More frequently in one sex than in the other Frequency in both sexes is same 3) Cortisol is an imporant anti-inn ammatory hormone and is regulated by a) PTH b) Calcitonin ACTH ) Conisol e) Thyroxine 4) Cancer cells are: a) Identical to the normal cells b) Have slow mitotic rate c)Form benign tumors d) Differentiane into mature cells e)None of the above 5) Ifa cell lacked the enzyme DNA-polymerase it wouldn't: a) Make proteins Produce new nuclear membrane b) c) Form spindle fibers for mitosis . Form complementary strands ofDNA -, d) e) Produce cell membraneExplanation / Answer
1) hemophilia is X- linked recessive genetic disease that occur in males. Females are mostly carrier of this disease. Ans is b
2) Sex influenced trait are autosomal trait that influenced by sex . It is one that occur more frequently in one sex then the other. Ans is d
3) Cortisol is regulated by ATCH. Ans is c. Cortisol is regulated by hormone adrenal corticotropic (ATCH). It secreted from petutary gland when orders come from hypothalamus.
4) Cancer cells form benign tumor. Ans is c. It accumulate at one place. Actively dividing cells or uncontrolled proliferation of cells form a clump that is called benign tumor when this cell become invasive called malignant tumor. It is not identical to normal cell, have fast mitotic rate not slow, and not differentiate into mature cells.
5) DNA polymerase enzyme make DNA copies in cells . It responsible for forming a complementry strand of DNA. If the cell lack this enzyme , no complementry strand of DNA formed. So the ans is d.
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