Hemophilia results from a deficiency in
A. platelets, and results in normal bleeding.
B. fibrin, and results in abnormal bleeding.
C. plasma, and results in abnormal bleeding.
D. collagen, and results in normal bleeding.
E. clotting factor VIII, and results in abnormal bleeding.
E. clotting factor VIII, and results in abnormal bleeding.
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In positive feedback homeostatic mechanisms
(a) the response reverses the change. (b) the response intensifies the change. (c) the response occurs before the change. (d) none of the above answers occurs.
Which hormone regulates milk production in mammals and salt and water balance in other vertebrates?
A. growth hormone B. prolactin C. thyroid-stimulating hormone D. adrenocorticotropic hormone E. luteinizing hormone
Why does meiosis promote genetic variability?
A. Meiosis undergoes one cell division producing diploid cells. B. Meiosis undergoes one cell division producing haploid cells. C. Meiosis undergoes two cell division producing diploid cells. D. Meiosis undergoes two cell division producing haploid cells.
Consider a sample of 100 individuals sampled from a population in Hardy–Weinberg equilibrium that are gen-otyped at the single locus
Of these 100 individuals, 25 individuals are A1A1 homozygotes, 45 are A1A2 heterozygotes, and 30 are A2A2 homozygotes. Please list the observed and expected genotypic frequencies of this locus in this sample What will be an ideal response?