Assume that a cross is made between tall and dwarf tobacco plants
The F1 generation showed intermediate height, whereas the F2 generation showed a distribution of height ranging from tall to dwarf, like the original parents, and many heights between the extremes. These data are consistent with which one of the following modes of inheritance?
A) multiple-factor inheritance
B) hemizygosity
C) codominance
D) alternation of generations
E) incomplete dominance
A
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Asexual reproduction occurs in:
A. unicellular eukaryotes. B. skin cells. C. plant dermal cells. D. All of the above are correct.
Green algae such as Ulva demonstrate an alteration of generations. The diploid phase is called the
a. gametophyte generation. b. embryo. c. sporophyte generation. d. diploid generation. e. zygote.
How many mass extinctions were experienced on a global scale before the alarming mass extinction that's now occurring?
A) six B) five C) two D) none
In bryophytes and some other plants, which of the following is a protective structure where sperm cells are formed?
a. archegonium b. strobilus c. stoma d. antheridium