The primary function served by erythrocytes is
A. transport of oxygen.
B. defense against pathogens.
C. buffering against changes in blood pH.
D. sealing breaks in the walls of blood vessels.
E. transport of water-soluble vitamins.
A. transport of oxygen.
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You cross a true-breeding stock of black BB. mice with skinny (SS) toes to a stock of white bb. mice with fat (ss) toes. From this, you produce an F1 generation of black mice with skinny toes (Bb, Ss)
If the single genes responsible for coat color and toe appearance do not sort independently, then you would expect to see: A. more than 75% of your F2 black mice with skinny toes. B. more than 25% of your F2 black mice with fat toes.
Estrogens can both induce cancer cell proliferation and prevent breast cancer
Indicate whether the statement is true or false.
Although an orphan, Ian is also Jewish. If both he and Sylvia were carriers, what would be their chances of having a Tay-Sach's child?
a. 3 out of 4 (75%) b. 2 out of 4 (50%) c. 1 out of 4 (25%) d. Not enough information is given to make this type of prediction.
In rabbits, there are four alleles at the c locus. Arranged in dominance sequence they are:C
(agouti), cch(chinchilla), ch(Himalayan), and c (albino) (a) Is it possible to cross two agouti rabbits and produce both chinchilla and Himalayan offspring? (b) Is it possible to cross two chinchillas and produce 1/2 chinchilla and 1/2 Himalayan? What will be an ideal response?