The mutant fly in the accompanying figure illustrates:
a. the existence of homeotic genes in Drosophila.
b. the concept of totipotency.
c. the normal functions of genes affecting segment identity.
d. genetic diversity in the fly.
e. a structure containing many nuclei residing in a common cytoplasm
a
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All plants carry the gene LFY, which carries out similar functions in all plants
Indicate whether the statement is true or false.
Which statement about stress is incorrect?
A) Stress increases as population density increases. B) Stress may trigger the release of specific chemical signals or pheromones. C) Stress can stimulate growth and increase the rate of reproduction. D) Stress may result in increased vulnerability to disease.
What is the name for the simple body that makes up the gametophyte generation for many liverworts?
a. archegonium b. thallus c. gemma d. rhizoid
The number of protons in an uncharged atom ______.
Fill in the blank(s) with the appropriate word(s).