The zoo decides to keep all of Gus and Ida's descendants under zoo conditions for the next 30,000 years. They breed only with each other. You visit the zoo in 30,000 years and see their offspring
Do you expect their offspring, which are alive in 30,000 years, to be identical
in genotype and phenotype to Gus and Ida? Keep in mind, polar bears start reproducing
when they are between 5 and 10 years old, and adult females give birth to two cubs every
2-3 years.
A. Yes, because evolution only occurs in
nature.
B. Yes, because they had a small population
to begin with (only two bears), so there was
little genetic variation to start.
C. No, because mutation would occur
occasionally and there are selective
pressures that exist in artificial as well as
natural environments.
D. Maybeâ€"it depends on mutation rates and
strength of selective pressures.
C
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The risk of having a baby with Down syndrome is associated with:
A. the age of the mother. B. the health of the mother. C. the socio-economic status of the mother. D. the IQ of the mother. E. All of the answer options are correct.
Muscles, including the biceps muscle in the human arm, are organs. What can be inferred from this information?
a) muscle contains different types of specialized cells and tissues b) muscle contains only specialized muscle cells c) muscle is a part of each of the body's organ systems d) muscle contains unspecialized cells that form a tissue
The termination of translation occurs when a release factor recognizes the stop codon.
Answer the following statement true (T) or false (F)
Which of the following would NOT be true of cDNA produced using horse liver tissue as a starting material?
A. It is a copy of an mRNA expressed in horse liver cells. B. It is produced from mRNA using reverse transcriptase. C. It could be used to create a library of genes expressed in horse liver. D. It can be sequenced using the dideoxy chain-termination method. E. It contains genes from horse liver cells with both exons and introns.