What role does RNAi play in formation of heterochromatin in yeast?
What will be an ideal response?
Ans: Centromeric repeats in yeast chromosomes are transcribed to RNAs that are cleaved into smaller RNAi molecules. Along with proteins, these become part of a complex that assists in chromatin remodeling. The RNAi molecules specifically target the complex to centromeres.
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What is the sliding clamp in eukaryotic DNA replication is known as?
a. mtRNA b. euDNA c. PCNA d. DNA pol I
Evaporation of sweat helps ____ a(n) ____ body temperature
a. lower; depressed b. raise; depressed c. lower; elevated d. raise; elevated e. maintain; average
When the heart muscle is relaxed it is in ________.
a) systole b) diastole
Which of the following examples indicates the level of the best method for protecting biodiversity in the species-rich regions referred to as hot spots?
a. Individual elephants in the savanna b. All of the populations of all species in the savanna c. The entire population of elephants in the savanna d. The populations of all species and the abiotic components of the environment in the savanna.