In Sanger sequencing, what causes DNA synthesis to terminate at a specific base?
A) Restriction endonucleases cleave DNA after particular bases.
B) Fluorescent molecules produce high-energy light that inactivates DNA polymerase.
C) Incorporation of a deoxynucleotide that lacks a base causes DNA polymerase to stall.
D) Incorporation of a dideoxynucleotide that lacks a 3? hydroxyl.
E) Incorporation of a ribonucleotide that lacks a 5' phosphate.
D) Incorporation of a dideoxynucleotide that lacks a 3? hydroxyl.
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True sea snakes are ________ and do not come to land to breed
a. oviparous b. none of these choices c. viviparous d. ovoviviparous
The graph above displays results from subjects in a study who responded to a questionnaire on character and temperament. The subjects had a known genotype for the DRD4 gene (associated with novelty-seeking behavior). Results are shown for the CC group and the CT and TT genotypes as another group. In the graph, what do the light blue bars represent?
What will be an ideal response?
In rabbits, long hair and black fur are produced by the dominant alleles L and B, which assort independently. The genotype ll produces short hair and the genotype bb produces white fur
A cross between a male with short, black fur and a female with long, white fur produces four offspring with short, black fur, four offspring with long, white fur, four offspring with short, white fur, and four offspring with long, black fur. What are the genotypes of the parents? A) llBB × LLbb B) LlBb × LlBb C) llBb × Llbb D) LLBB × llbb E) Impossible to determine from the information given.
If the DNA contained in the chromosomes of an organism is similar to an instruction manual, then what are the genes "instructing" the cell to do?
A) grow in size until a certain point is reached, then reproduce itself B) convert carbohydrates into enzymes C) change shape and structure to meet the demands of the local environment D) synthesize specific proteins from amino acids