The neural circuit that allows a male stickleback fish to orient and behave aggressively towards an inanimate object with a red stripe is an example of a(n)
A. stimulus-response chain.
B. supernormal stimulus.
C. innate releasing mechanism.
D. sign stimulus.
E. fixed action pattern.
Answer: C
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Which of the following diseases affecting respiratory function is caused by an infectious organism?
A. lung cancer B. emphysema C. asthma D. cystic fibrosis E. pneumonia
Mutations in myosin VII result in an autosomal recessive disorder called ________ , which is characterized by congenital profound hearing loss, problems in the vestibular system, and retinitis pigmentosum.
Fill in the blank(s) with the appropriate word(s).
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color
The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with white flowers crossed with a dwarf plant with purple flowers produces all tall offspring with purple flowers. What is the genotype of the parents? What will be an ideal response?
If a strand of DNA has the nitrogen base sequence 5'-ATTTGC-3', what will be the sequence of the matching strand?
a. 3'-ATTTGC-5' b. 3'-GCAAAT-5' c. 3'-UAAACG-5' d. 3'-TAAACG-5' e. 3'-TUUUCG-5'