Trachoma, the leading cause of blindness in the world, is caused by a __________ species.
A) Chlamydia
B) Haemophilus
C) Neisseria
D) Rickettsia
A) Chlamydia
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In angiosperms, the gametophyte generation:a
results from the fertilization of two gametes. b. is dominant. c. is nutritionally dependent on the sporophyte. d. produces gametes via meiosis. e. produces spores by mitosis
Calvin cycle (Dark reaction) takes place in
A) thylakoid B) cytoplasm C) stroma D) mitochondria
TRAIT SPECIESABCDE110000211111311111411110511100611000 The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, while a "1" indicates the derived condition. Based on this data, which pair of species diverged most recently?
A. 6 and 5 B. 1 and 4 C. 2 and 3 D. 6 and 4 E. 2 and 4
The Pax6 gene codes for a transcription factor that initiates differentiation of cells that ultimately form the eye. Suppose that a researcher added an activator for the Pax6 gene to embryonic cells that are in the process of forming legs in Drosophila
What do you think the researcher will observe? A) Legs and eyes will develop normally. B) Legs will develop where the eyes normally develop. C) Eyes will develop where the legs normally develop.