The use of traditional cross-breeding in developing breeds with desired characteristics is limited by __________
A. the short generation times of animals.
B. large litter sizes.
C. whether individuals with the desired traits will inter-breed.
D. traits with specific inheritance patterns.
E. traits that are controlled by a single gene.
Answer: C
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In the 1940's, biologist Adolph Murie studied survival in Dall sheep in what is now Mount Danali National Park in Alaska
He found that Dall sheep that survive their first year of life have a high probability of surviving until they are around 9 years old; after that, they rapidly become easy prey for wolves and die at a very high rate. This pattern best fits a type ____ survivorship curve. Fill in the blank with the appropriate word.
A diagram that hypothesizes the evolutionary relationships between a set of organisms is a ____ tree
a. comparison b. phylogenetic c. classification d. taxonomic e. species
DNA duplication occurs during
a. interphase. b. prophase I. c. prophase II. d. interkinesis.
What type of mutation is seen here? Wild type: 5?-TAC AAA ATA CAG CGG-3? Mutation: 5?-TAC AAG ATA CAG CGG-3?
A) transition B) transversion C) insertion D) deletion E) nonsense