The "naked" seeds of conifers develop on the shelf-like scales of the ______.
A. Microsporocyte
B. Pollen cones
C. Microsporangia
D. Ovulate cones
E. Male cones
Ans: D. Ovulate cones
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The probability that two genes will be separated by crossing-over is related to:
a. the phenotype that they control. b. how far the two genes are from the centromere. c. the distance between the two genes on the chromosome. d. whether the two genes are located on a sex chromosome. e. how far the genes are from the kinetochore.
Social Darwinism is a(n):
A) idea that evolutionary competition in human society, as well as the natural world, weeded out the unfit and advanced humanity. B) belief that sacred authority called for hard work, saving, thrift, and honesty as necessary for salvation. C) set of movements and concepts related to ideas of transmutation of species or evolution. D) union of ideas from several social specialties which provides a widely accepted account of evolution.
A PPE ensemble weighs at least ______.
a. 25 lb b. 60 lb c. 75 lb d. 40 lb
The genetic code
A) contains sense codons and nonsense codons. B) uses a quartet code to encode the codons. C) relies on codons made up of DNA. D) has 60 codons. E) encodes for 18 amino acids.