SOLVED

16. A difference in DNA sequence that occurs in a population is called A) an allele. B) a genotype. C) a phenotype. D) a polymorphism. 17. “Knockout studies” A) are used to learn about mating behaviors in mice. B) are used to gain a better understanding of DNA sequences. C) manipulate specific genes and observe the effects on behavior by “removing” certain genes from mice DNA. D) manipulate specific genes by inserting artificial hormones into mice DNA. 18. Recent studies have examined gene-environment interactions in depression using A) peptides. B) DNA profiling. C) the serotonin transporter gene. D) alleles. 19. The study of the pups born to high LG-ABN mothers or low LG-ABN mothers and raised by high LG-ABN mothers or low LG-ABN mothers provided support for the idea that A) environments influence the expression of genes in psychopathology. B) adoption studies are a useful method for understanding genetic markers. C) environments do not play as important a role as genetics. D) LG-ABN behaviors in mothers are not related to the expression of certain genes in pups. 20. Adoption studies are ideal studies for investigating A) polymorphism. B) gene-environment interactions. C) genotypes. D) alleles.  Â