What is dosage compensation with respect to the sex chromosomes, and how is this accomplished in humans? What will be an ideal response?
Dosage combination equalizes the expression of X-linked genes in males and females. The
process of dosage compensation involves the random inactivation of one of the two X
chromosomes in the female.
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Exotic species that are introduced into a nonnative
habitat can a. interbreed with native species. b. drive endemic species to extinction. c. die out due to competition from native species. d. blend in with endemic species. e. create habitat islands for themselves
Cardiac glycosides, molecules causing a drastic effect on vertebrate heart function, are produced as defensive chemicals by plants belonging to
A. the milkweed and dogbane families. B. the mustard family. C. the grass family. D. the poison ivy, oak, and sumac families. E. the bean family.
If two phenotypically normal parents have six children, and two daughters and two sons have the same genetic
disorder, that disorder is most likely to be ____. a. hemophilia b. cystic fibrosis c. Marfan syndrome d. muscular dystrophy e. color blindness
Shivering helps increase body temperature
____________________ Indicate whether the statement is true or false.