Which generation is dispersed by seed plants?
Answer : Sporophytes
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. When allopatric populations reestablish contact upon elimination of a geographical barrier, ____ has occurred
a. species clustering b. secondary contact c. parapatric speciation d. sympatric speciation e. evolutionary convergence
Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following numbers: 106 AaBb, 48 Aabb, 52 aaBb, 94 aabb. These results are consistent with ________
A) linkage with approximately 33 map units between the two gene loci B) sex-linked inheritance with 30 percent crossing over C) 100 percent recombination D) linkage with 50 percent crossing over E) independent assortment
According to the logistic growth equation dN/dt = rmaxN(K — N)/K,
A) the number of individuals added per unit time is greatest when N is close to zero. B) the per capita growth rate (r) increases as N approaches K. C) population growth is zero when N equals K. D) the population grows exponentially when K is small. E) the birth rate (b) approaches zero as N approaches K.
The extracellular state of a virus is a (capsid/nucleocapsid/virion).
Fill in the blank(s) with the appropriate word(s).