When a round fruit plant is crossed with a long fruit plant their offspring are oval. What is the best explanation for this scenario?
A. pleiotropic inheritance
B. polygenic inheritance
C. incomplete dominance
D. X-linked inheritance
Ans: C. incomplete dominance
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The male pine cone
(a) produces pollen. (b) contains a female gametophyte. (c) bears a megasporangium containing a megaspore mother cell. (d) gives rise to a seed.
Given what you now know, what information is most likely to produce the correct answer?
What will be an ideal response?
The graph above shows the survival of sociable weavers as a function of body mass. Sociable weaver body mass
seems to be an example of ____. a. directional selection
b. stabilizing selection c. sexual selection d. disruptive selection e. artificial selection
Before differentiation can begin during the processes of plant cell and tissue culture, parenchyma cells from the source tissue must
a. differentiate into procambium. b. undergo dedifferentiation. c. increase the number of chromosomes in their nuclei. d. enzymatically digest their primary cell walls. e. establish a new polarity in their cytoplasm.