Which of the Following Conclusions Has Led to the Comparison
Which of the following conclusions has led to the comparison between the number of human genes and those of other animal species?
A) The density of the human genome is far higher than in most other animals.
B) The number of proteins expressed by the human genome is far greater than the number of its genes.
C) Most human DNA consists of genes for protein, tRNA, rRNA, and miRNA.
D) The genomes of most other organisms are significantly smaller than the human genome.
Why is it more difficult to identify eukaryotic genes than prokaryotic genes using genomic techniques?
A) The proteins are larger in eukaryotes than in prokaryotes.
B) The coding portions of genes in eukaryotes are shorter than in prokaryotes.
C) There are no start codons in eukaryotic genes.
D) There are introns in eukaryotic genes.
Which of the following statements correctly describes one of the characteristics of alternative splicing in vertebrate genomes?
A) Vertebrate genomes can produce more than one polypeptide from a single gene.
B) Vertebrate genomes can produce only one polypeptide from a single gene.
C) Vertebrate genomes are always smaller than other organisms.
D) Alternative splicing leaves introns in vertebrate genes after they are transcribed.
Which of the following statements correctly describes one characteristic of a multigene family?
A) A multigene family includes multiple genes whose products must be coordinately expressed.
B) A multigene family includes genes whose sequences are very similar and that probably arose by duplication.
C) A multigene family includes a gene whose exons can be spliced in a number of different ways.
D) A multigene family includes a highly conserved gene found in a number of different species.