At a given position, homologous chromosomes have Select one:
a. the same genes but can have different alleles.
b. different genes and alleles.
c. different genes, but can have the same alleles.
d. the same genes and alleles.
a. the same genes but can have different alleles.
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Which disease test will show a false positive when immunized with the BCG attenuated virus?
A) tuberculosis B) whooping cough C) diphtheria D) pneumococcal pneumonia
During binary fission, each daughter cell inherits a copy of the original circular chromosome. What mechanism transfers a copy into each new cell?
a. After replication the chromosomes acquire a negative charge, repelling each other. b. FtsZ proteins between the chromosomes build temporary spindles, pushing them apart. c. Each chromosome attaches to the plasma membrane and is drawn apart as the cell elongates. d. The FtsZ ring forms in the middle of the chromosomes, separating them as the septum expands.
In this depiction of transcription, the ____
strand is ____ because it ____. a. upper; RNA; is single-stranded. b. lower; RNA; contains uracil. c. lower; RNA; contains thymine. d. upper; RNA; has no uracil (U). e. lower; DNA; contains adenine (A).
In positional cloning, the researcher begins with a phenotype. To move toward identification of its DNA sequence, she must begin with what step?
What will be an ideal response?