In birds and butterflies, males contain ____ sex chromosomes and females contain ____ sex chromosomes
a. XY; XX
b. ZZ; ZW
c. ZY; XW
d. XX; XY
e. ZW; ZZ
ANSWER: b
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True or False. An incomplete fossil record is evidence that the theory of evolution is false
A. true B. false
Truffles
A. are ectomycorrhizas. B. are a mushroom. C. are a lichen. D. form a sheath around a root of an appropriate tree. E. are ectomycorrhizas AND form a sheath around a root of an appropriate tree.
Who of the following was the first to observe and accurately describe microorganisms?
A. van Leeuwenhoek B. Pasteur C. Tyndall D. Lister
Answer the following questions true (T) or false (F)
1. Normally, complement-activating immune complexes are eliminated from the body by phagocytosis. 2. Individuals with AB blood type are called "universal donors" because they do not have antibodies against blood group antigens. 3. MHC genes are significant genetic factors in predisposition to develop autoimmune disease.