Bio: cell and molecular
ANSWER ALL
1 Evolution occurs through:
A adaptation followed by mutation
B selection followed my mutation
C mutation followed by natural selection
2 in eukaryotes, individual protein domains are generally encodes by single _____.
A introns
B genes
C exons
3 it is thought that gene duplications are generated by an error in what process?
A DNA replication and repair
B replication of chromosome ends
C homologous recombination
D transcription
4 point mutations can be caused by an error in what process?
A homologous recombination
B DNA replication and repair
C replication of chromosome ends
D transcription
5 which of the following is NOT true?
A all human proteins are thought to have arisen from the duplication and shuffling of a few thousand exons
B exon shuffling allows the generation of hybrid proteins with new functions
C exon shuffling requires the presence of introns
D exon shuffling allows bacteria to become antibiotic resistant
Bio: cell and molecular
ANSWER ALL
1 Evolution occurs through:
A adaptation followed by mutation
B selection followed my mutation
C mutation followed by natural selection
2 in eukaryotes, individual protein domains are generally encodes by single _____.
A introns
B genes
C exons
3 it is thought that gene duplications are generated by an error in what process?
A DNA replication and repair
B replication of chromosome ends
C homologous recombination
D transcription
4 point mutations can be caused by an error in what process?
A homologous recombination
B DNA replication and repair
C replication of chromosome ends
D transcription
5 which of the following is NOT true?
A all human proteins are thought to have arisen from the duplication and shuffling of a few thousand exons
B exon shuffling allows the generation of hybrid proteins with new functions
C exon shuffling requires the presence of introns
D exon shuffling allows bacteria to become antibiotic resistant
Bio: cell and molecular
ANSWER ALL
1 Evolution occurs through:
A adaptation followed by mutation
B selection followed my mutation
C mutation followed by natural selection
2 in eukaryotes, individual protein domains are generally encodes by single _____.
A introns
B genes
C exons
3 it is thought that gene duplications are generated by an error in what process?
A DNA replication and repair
B replication of chromosome ends
C homologous recombination
D transcription
4 point mutations can be caused by an error in what process?
A homologous recombination
B DNA replication and repair
C replication of chromosome ends
D transcription
5 which of the following is NOT true?
A all human proteins are thought to have arisen from the duplication and shuffling of a few thousand exons
B exon shuffling allows the generation of hybrid proteins with new functions
C exon shuffling requires the presence of introns
D exon shuffling allows bacteria to become antibiotic resistant
Answer:
1). C mutation followed by natural selection
The ability of random mutation and natural selection accounts for the complexity of life (evolution).
2). C exons
Each separate exon encodes an individual protein folding unit or domain.
3). C homologous recombinations
Homologous recombination is a type of geneticrecombination in which nucleotide sequences are exchanged between two similar or identical molecules of DNA. It is most widely used by cells to accurately repair harmful breaks that occur on both strands of DNA, known as double-strand breaksDuplications can arise from unequal crossing-over that occurs during meiosis between misaligned homologus chrosmosomes.
4). B DNA replication and repair
5). D exon shuffling allows bacteria to become antibiotic resistant
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