In Figure 28-2, the zygote is the structure labeled:
a. 1.
b. 4.
c. 8.
d. 17.
e. 21.
C
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Match each scientist or group of scientists on the left with the appropriate statement to the right.
A) hereditary factors B) pollen grain C) chromosome theory of heredity D) dog saliva E) "ferments" of yeast F) transformation G) DNA double helix H) embryonic plant I) transfer RNA J) embryonic bacteria K) fruit fly L) transcription M) translation N) Calvin-Benson cycle O) "one gene—one enzyme" P) oral bacteria Q) urea 1) Gregor Mendel 2) Walter Sutton 3) Matthias Schleiden 4) Oswald Avery, Colin MacLeod, and Maclyn McCarty 5) George Beadle and Edward Tatum 6) James Watson and Francis Crick 7) Thomas Hunt Morgan 8) Friedrich Wöhler 9) Louis Pasteur
The lac operator site within the lac operon is an example of a
A. cis-acting element. B. para-acting element. C. trans-acting element. D. inter-acting element. E. contra-acting element.
Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?
A) directional selection B) stabilizing selection C) disruptive selection D) You cannot determine the type of selection from the above information.
What is the probability of two parents, genotypes Qq and QQ, having an offspring of genotype QQ.?
A. 1/4 B. 3/4 C. 0 D. 1/2 E. 1