Ascientist observes a pair of separate chromosomes that have genes for the same trait arranged in the same order. however, some of the alleles for the genes are different. what is the scientist most likely observing? a. homologous chromosomes with heterozygous alleles b. homologous chromosomes with homozygous alleles c. heterozygous chromosomes with heterozygous alleles d. heterozygous chromosomes with homozygous alleles

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical?

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Which term describes a normal value for something in the body? a.homeostasis b.set point c.feedback loop d.integration center