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Mendel's crossing of spherical-seeded pea plants with wrinkled-seeded pea plants resulted in progeny that all had spherical seeds. this indicates that the wrinkled-seed trait is ?
The genotype of an organism that expresses a dominant trait can be determined by ?
crossing the organism with a homozygous recessive organism
A particular genetic cross in which the individual in question is crossed with an individual known to be homozygous for a recessive trait is referred to as a
Which of the following molecules functions to transfer information from one generation to the next in eukaryotes?
The strands that make up DNA are antiparallel. This means that ?
the 5' -to- 3' direction of one strand is counter to the 5' -to- 3' direction of the other strand
Double-stranded DNA looks like a ladder that has been twisted into a helix, or spiral. The side supports of the ladder are?
alternating sugars and phosphates
The characteristic of DNA that allows it to make an exact copy of itself is ?
its complementary base pairing
At the end of DNA replication, two DNA molecules are produced, each one consisting of a parental DNA strand and a new DNA strand. This process is known as ?
In DNA replication, each newly made strand is?
complementary in sequence to the strand from which it was copied
The enzyme DNA ligase is required continuously during DNA replication because ?
fragments of the lagging strand must be joined together
In sickle-cell disease, one amino acid is substituted for another. This type of mutation is referred to as a ----- mutation?
The process by which information in the nucleic acid sequence is used to direct the production of a specific chain of amino acids is called ?
Which of the following statements about the flow of genetic information is true ?
DNA encodes information that is translated into RNA, and RNA encodes information that is translated into proteins
Which of the following molecules is most involved in the transfer of genetic information from the nucleus to the sytoplasm?
UGU and UGC both code for cysteine. A change from UGU to UGC would thus be a ----- mutation ?
A newly formed protein whose destination is the golgi apparatus will likely contain ?
a signal sequence
After translation, the polypeptide chains of some proteins are cut by a process called ?
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