Septa divide the actinomycete mycelia into cells, each containing a single nucleus.
Answer the following statement true (T) or false (F)
False
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Researchers believe the evolution of common bread wheat (Triticum aestivum) resulted from a series of ____ between
related species, some of which produced ____ species.
a. hybridizations; allopolyploid b. geographic separations; allopolyploid c. centromere inversions; autopolyploid d. chromosome deletions; autopolyploid e. chromosome rearrangements; autopolyploid
A plasmid such as an F factor that is capable of integrating into the bacterial chromosome is a(n)
A) prophage. B) episome. C) auxisome. D) perisome. E) elaiosome.
In an organism such as a sea urchin, administration of actinomycin D prevents RNA synthesis. However, early development up to gastrula formation can take place in the presence of actinomycin D but gastrulation cannot. This implies that __________
A) development beyond gastrulation requires actD B) actD is part of the normal environment of a sea urchin and serves as a developmental signal molecule C) actD receptors begin to form only on cell surfaces of the gastrula D) maternal effect genes regulate development until gastrulation E) immature sea urchin embryos produce actD to regulate further development
What are the components of a population pyramid?
a. Gender b. Population c. Age d. Weight