likiUniversity of Kerala
Human chromosomes are linear dsDNA and they often show topological constraints, particularly during DNA replication and transcription. Why do the chromosomal DNA would have topological constraints?
A. Multitudes of H bonding between bases make long dsDNA quite stable
B. Protein-DNA interactions may cause changes in the DNA topology
C. Chromosomes circularize during replication and transcription
D. Because of two of these options
E. Because all of these options
The ability to roll your tongue (R) is dominant to not being able to roll your tongue (r). Create a Punnett square on a separate sheet of paper. Paula is heterozygous for rolling her tongue. Her husband Tony cannot roll his tongue. What are the chances that they will have a child with the RR genotype? *