A dog that is homozygous recessive for a dwarf allele (dd) is mated with a dog that is homozygous dominant (DD-normal size). What will be the phenotype of the offspring?
A. 50% dominant and 50% recessive
B. 75% dominant and 25% recessive
C. 100% recessive
D. 100% dominant
Ans: D. 100% dominant
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A change in the rate or frequency of movements in response to environmental stimuli is called taxis
a. True b. False
As you climb the mountain, why are the biomes changing?
A. The air is thinner. B. The latitude is changing. C. More rain falls in a rain shadow. D. Some animals live better at higher elevations. E. It is colder.
What is true of a life table? Select all that apply.
A. It often excludes males. B. It uses a log scale to show general patterns of survival over time. C. It often includes fertility rates for each age class. D. It provides data on the number of individuals alive in a particular age class.
Behavior can be defined as the way an animal responds to a(n) ________ in its environment.
Fill in the blank(s) with the appropriate word(s).