C and D
(Once meiosis I is completed, cells are haploid.)
The antibiotic penicillin is isolated from <u><em>Penicillium notatum</em></u> fungi
Penicillin was first discovered in 1928 and was used at St. Mary's Hospital, London, by Alexander Fleming to heal wounds due to its antibacterial properties.
Explanation:
Fungi and bacteria usually produce antibiotics (as secondary metabolites) for defense mechanism. They do so to limit competition for resources with other neighboring fungi or bacteria in their environment. This is why when a fungus or bacteria establishes itself in an environment, you hardly see other fungi or bacteria types growing in their vicinity.
Learn More:
For more on antibiotics check out;
brainly.com/question/10320882
brainly.com/question/9202583
#LearnWithBrainly
This question seems to lack information. Please complete.
The correct option is this: Males of one species perform orchestrated dances and sing songs that only attract females of the same species.
Ecological isolation refers to the sexual practice among living organisms, in which populations of living organisms occupy the same ecology or region but live in different habitats and refrain from inter species sexual relationships. There are five types of isolation, these are: ecological, temporal, mechanical, behavioral and geographical isolation.
Behavioral isolation is said to occur when two allopatric species living in the same territory refraining from inter breeding as a result of differences in courtship behaviors.