Once inside the host cell, phage DNA
A. is replicated.
B. is transcribed.
C. may get degraded by bacterial nucleases.
D. All of the choices are correct.
D
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Imagine that you are searching for the gene associated with nail-patella syndrome, a dominant genetic disorder that causes developmental abnormalities. In a large pedigree you discover an association between nail-patella syndrome and a genetic marker that
occurs in two different alleles, A and B. Fifteen individuals within this pedigree have nail-patella syndrome and are A/B heterozygotes for the marker. Thirty individuals within this pedigree don't suffer from nail-patella syndrome and are homozygous for the A marker allele. One individual within this pedigree has nail-patella syndrome and is also homozygous for the A marker allele. The most likely explanation for this exceptional individual is that _____. A) a new mutation converted the disease-causing allele to the wild-type form B) a new mutation converted the B allele of the marker to the A form C) the exceptional nail-patella individual is haploid D) recombination occurred between the nail-patella gene and marker locus in one of the parents of the exceptional individual
All photosynthetic protists
A. carry out anoxygenic photosynthesis using one photosystem. B. carry out anoxygenic photosynthesis using two photosystems. C. carry out oxygenic photosynthesis using one photosystem. D. carry out oxygenic photosynthesis using two photosystems.
Four of the five structures listed below are
associated with membranes. Select the exception. a. endoplasmic reticulum b. granum c. plasma membrane d. chromosome e. nuclear envelope
The earliest type of eukaryotic organism
currently known is a type of a. virus. b. bacterium. c. alga. d. anim