B-lymphocytes and T-lymphocytes mature in the thymus gland.
Answer the following statement true (T) or false (F)
False
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What does the ABC model of flower development attempt to explain?
A) how different combinations of gene products trigger the formation of different floral organs B) why petals are found on the inside of the whorl of sepals instead of on the outside C) why the four types of floral organs occur in whorls D) why apical meristems are converted to floral meristems in response to specific cell-to-cell signals
Archaea in pelagic deep-water are almost exclusively
A) Crenarchaeota. B) Euryarchaeota. C) Nanoarchaeota. D) Thaumarchaeota.
Frameshift mutations may involve
a. substitution of nucleotides. b. substitution of codons. c. substitution of amino acids. d. insertion of one to several base pairs. e. all of these
Which of the following is an example of polygenic inheritance?
A) pink flowers in snapdragons B) the ABO blood group in humans C) white and purple flower color in peas D) skin pigmentation in humans