Anti-A and anti-B antibodies
A. are considered natural antibodies.
B. are present at birth.
C. are typically IgM.
D. easily cross the placenta.
E. are considered natural antibodies AND are typically IgM.
E
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Independent assortment means that _____
A. monohybrid crosses will show segregation and independent assortment B. the segregation of one gene pair depends on the segregation of another gene pair C. the gametes produced must be heterozygous in all cases D. the segregation of one gene pair occurs as if no other gene pair was present E. the phenotypic ratio in F2 will be the same for dihybrid and monohybrid crosses
Structures that will develop into leaves and buds arise at a lateral meristem
____________________ Indicate whether the statement is true or false.
Adaptations for flight in birds include all EXCEPT
which of the following? a. sound production b. lightweight bones c. feathers d. efficient respiration e. four-chambered heart
The foramen ovale functions to:
a. permit blood to bypass the non-functional lungs in a fetus. b. establish the basic heart rate. c. prevent blood from flowing backward. d. carry blood to the lungs in a fetus. e. transport poorly oxygenated blood.