The rediscovery of Mendelian inheritance caused increased scrutiny of Darwin's theory of natural selection because of an apparent conflict in the two concepts
This conflict was based on the observation that Darwin focused on continuous traits, while Mendelian genetics deals with:
a. discrete characters.
b. alleles.
c. flowers.
d. genotypes.
e. All of the above.
A
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In eukaryotic organisms, the processing of the 45S rRNA into 5.8S, 18S, and 28S rRNA occurs where?
A. In the cytoplasm B. In the nucleolus C. In the endoplasmic reticulum D. In the Golgi body E. Throughout the cell
Why do crossing over and independent assortment occur during meiosis?
a. to increase genetic diversity b. to decrease genetic diversity c. to increase cell production d. to decrease cell production
In nonviral systems, what is the nature of the hereditary substance?
What will be an ideal response?
Many species of snakes lay eggs. However, in the forests of northern Minnesota, where growing seasons are short, only live-bearing snake species are present
This trend toward species that have live birth in a particular environment is an example of _____. A) an exaptation B) sexual selection C) species selection D) goal direction in evolution