What events can push a species to extinction?
What will be an ideal response?
Possible causes of extinction include loss of a food source, hybridization, loss of habitat, and competition with another species for resources.
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When an apical meristem cell divides, one daughter cell is called the initial and the other is called the derivative. What are the fates of these cells?
a. The initial is used to form primary meristems, and the derivative remains part of the apical meristem. b. Both the initial and the derivative remain part of the apical meristem. c. The initial remains part of the apical meristem, and the derivative is used to form primary meristems. d. Both the initial and the derivative are used to form primary meristems. e. The initial is used to form primary meristems, and the derivative is used to form secondary meristems.
Both bone and blood are types of connective tissue.
a. true b. false
In a certain population, the allele frequencies of the M and N blood group alleles are 0.6 and 0.4,
respectively. How many of a population of 500 would be expected to have MN blood type if the population is in genetic equilibrium for the MN locus? a. 200 b. 220 c. 240 d. 260 e. 300
Broths, milks, and infusions are all examples of
A) liquid media. B) semi-liquid media. C) solid media that will liquefy. D) solid media that will not liquefy.