EINSTEIN Elimination Round DIFFICULT

A geologist studies a seismogram from a distant earthquake and notices that the S-waves arrived later than expected. What might this indicate about the Earth’s internal structure in the region between the epicenter and the recording station?

• The crust is unusually thick in this region.

• The seismic waves traveled through a liquid layer.

• The region contains unusually dense rock layers.

• The recording station is closer to the earthquake’s epicenter than expected.

During translation, a ribosome reads the mRNA codon 5’-AUG-3’. What will be the corresponding tRNA anticodon and which amino acid will be added to the growing polypeptide chain?

• • 5’-UAC-3’, methionine

• • 3’-UAC-5’, methionine

• • 5’-TAC-3’, tyrosine

• • 3’-UAC-5’, tyrosine

A man with a type AB blood has a children with a woman who has type O blood. What is the chance that they have a child with type AB blood?

• 100%

• 25%

• 50%

• 0%

Why does when closely related individual’s mate with each other, the offspring is often NOT as fit as the two offspring of two unrelated individuals?

• Because close relatives are genetically incompatible

• Because it can cause recessive alleles to be expressed

• Because the DNA of close relatives reacts negatively in the offspring

• Inbreeding can bring together deleterious mutations that leads to harmful phenotypes.

How will you differentiate analogous structures from homologous structures as evidence of evolution?

• Analogous structures indicate common ancestry while homologous structures suggest evolution because of the same environmental factors.

• Analogous structures are structures which indicate that organisms might developed structures with same function as needs arises while homologous structures showed patterns of common descent from different body structures of closely related species.

• Both analogous and homologous structures are body structures used by researchers to study the evolutionary development of organisms while vestigial organisms showed different results.

• Both B and C are correct