Which of the following is not true about monozygotic twins?
A) They share all alleles at all loci.
B) They have a genetic relatedness of 0.5.
C) They have a genetic relatedness of 1.0.
D) They come from the joining of a single egg with a single sperm cell.
E) They are the result of a split of the zygote after fertilization.
B) They have a genetic relatedness of 0.5.
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All of the following are correct about treating viral diseases exceptÂ
A. viruses are killed by the same antibiotics that kill bacteria. B. many antiviral drugs cause severe side effects. C. interferons show potential for treating and preventing viral infections. D. many antiviral drugs block viral replication. E. All of these choices are correct.
If the women of Transylpolkonia traditionally delay having their first child until they are in their late 30s but the women of Chaldokia normally start their families in their teens, which nation will be more likely to have an increasing population?
What will be an ideal response?
Having two copies of the X-chromosome gene, ________, initiates the female sex-determining pathway by which gene regulatory mechanism?
A) DSX; alternative splicing B) SXL; alternative splicing C) DSX; alternative polyadenylation D) SXL; alternative polyadenylation E) TRA; alternative splicing
Which of the following processes occurs in eukaryotes but not prokaryotes?
A. DNA replication B. capping C. transcription D. translation E. gene regulation