If you were to examine a typical population at a single locus, you would find more copies of the wild-type allele than any other allele.
Answer the following statement true (T) or false (F)
True
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Homologous chromosomes have which of the following?
a. the same genes at the same locus b. the same genes at different loci c. different genes at the same locus d. different genes at different loci
You are the managing naturalist for a natural history museum that has just received a batch of fossils from one of the field paleontologists sponsored by the museum. The note in the box states the fossils all came from the same rock layer. The museum is organized according to geologic timescale, and its management needs you to tell them to which department (based on era) and period specialist (an individual with experience with life-forms of a particular geologic-timescale period) the fossils should go. You find fossils of fish and seed-bearing plants but no reptiles or higher animals and no flowering plants. To which era do these fossils belong?
A) Precambrian B) Paleozoic C) Mesozoic D) Cenozoic
The majority of human DNA does not code for genes.
a. true b. false
Which process normally occurs at the placenta?
A. Oxygen diffuses from fetal blood to maternal blood. B. Materials are exchanged between fetal and maternal blood. C. Maternal blood is converted into fetal blood. D. Digestive enzymes pass from maternal blood to fetal blood.