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describe how the structure of chromatin and chromosomes facilitates the following functionsa dna packagingb regulation of gene expression c
1 describe how the various molecular mechanisms act to regulate transcription of the genes within the lactose operon of e coli2 transcription of a
1 dna damage can occur spontaneously or be induced by external factors describe the types of dna damage caused by external factors and how they are
1 describe what effects epigenetic modifications such as methylation and acetylation can have in eukaryotic cells and how these modifications are
gene expression must begin with the process of transcriptiona describe the promoter motifs commonly associated with eukaryotic protein-coding
1 using specific examples describe how variations in dna sequence between individuals can lead to risk of disease describe how a range of techniques
1 in the town of jasper ca there is currently one full-time family doctor if the towns population grows at a steady rate of 14 per year how many
a typical chest x-ray exposes the patient to a radiation dose of 001 rem if a man receives 10 such x-rays in a lifetime what is his chance of
1 a roan bull which is heterozygous for the polled condition is mated to several cows of identical genotype to his how many roan polled animals
1 in cattle the polled condition h is dominant to the horned condition h a cross between an individual with red coat r and white coat w results in
1 in rabbits black fur is dominant to brown and long hair is dominant to short hair a male is mated to several brown short-haired females these
1 a pure-breeding black smooth guinea pig was mated to a pure-breeding white rough female they produced several litters and eventually five males and
1 in guinea pigs black coat color b is dominant to white b and a rough coat r is dominant to smooth r what are the expected genotypic and phenotypic
1 andalusian chickens may be either black white or gray the gene for black is not dominant over the gene for white nor is the gene for white dominant
1 in chickens rose comb r is dominant over single comb r a rose-combed male is mated to a rose-combed female eighteen chicks are produced ten of
1 a man with normal pigment whose father was an albino marries an albino what chance is there that their first child will be an albino2 a man with
1 in the human normal pigmentation a is dominant to albinism a what results would be expected from the following matings both genotypically and
the cell cycle undergoes a sequence of changes which involve a period of growth replication of dna followed by cell division this sequence of changes
1 compute the mean energy per nuclear disintegration a for 99mtc if 20 x 109 bq of this isotope is injected into a patient assume that one-half of
1 by direct measurement of the activity of the thyroid gland in several patients who had received 131i for diagnostic purposes it was observed that
a cellular system has a total of 500 duplex voice channels the service area is divided into 150 cells suggest a three different cluster size n values
1explain the challenges and advantages of having internal gills over external gills for gas exchange2explain how increased stress levels can affect
a water demands vary among communities discuss some of the factors affecting water uses b a coastal town has a resident population of 8000
define each term and give an example of an application that uses the followinga biocompatible materialb biodegradable materialc
a what are the needsfor an organism to be an indicator organismb in australia national parks and coastal beaches attract various visitors during