The inheritance of sex-influenced traits can be dominant in one sex but recessive in the other
a. True
b. False
Indicate whether the statement is true or false
True
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In response to stress, the adrenal gland promotes the synthesis of glucose from non-carbohydrate substrates via the action of the steroid hormone _____
A) glucagon B) cortisol C) epinephrine D) thyroxine E) adrenocorticotropic hormone (ACTH)
A bird sanctuary sometimes takes over the care of eggs or chicks of an endangered duck species if the parents are killed. They are sometimes able to use mothers of farm ducks to cross-foster the chicks, but it doesn't always work. Looking at the following data table, what is the critical period for imprinting in this species? (Note: DAH stands for "days after hatching".)
A. The critical period extends from 1-3 DAH.
B. The critical period extends from 3-8 DAH.
C. The critical period ends sometime between 1-3 DAH. We can not determine from this data when the critical period begins.
D. The critical period ends sometime between 3-8 DAH. We can not determine from this data when the critical period begins.
Clarify question:
What is the key concept addressed by the question?
What type of thinking is required?
Gather Content:
What do you already know about imprinting? What other information is related to the question?
Choose Answer:
Given what you now know, what information is most likely to produce the correct answer?
Reflection on Process:
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Assuming that a particular disorder is caused by an allele of a single gene, what feature of a pedigree would allow one to conclude that the disorder was caused by a dominant allele?
A. Two unaffected parents have an affected child. B. Two affected parents have an unaffected child. C. An affected mother only has affected sons. D. All of the descendants of a particular affected person are also affected
The most common method of bacterial reproduction is
A) prokaryotic fission. B) meiosis. C) mutation. D) budding.