Understanding the human genome: a). Describe the components (major classes) of the human genome and their...
Understanding the human genome:
a). Describe the components (major classes) of the human genome and their relative proportions
b). What percent of the human genome is:
-transcribed?
-codes for proteins?
-consists of transposons?
c). A small percentage of transcribed DNA actually is used to produce proteins through translation. What do you think the function of other transcribed material may be?
Homework Answers
Ans:
a) The human genome is formed of 23 pairs of chromosome which
contains of about total 3 billion deoxyribonucleic acid base
pairs.
Out of twenty three pairs of chromosome : twenty two chromosome
chromosomes and the X and Y sex-chromosomes.
Somatic cells typically comprises of one copy of
chromosomes 1-22 from both parent, and one x chromosome from the
mother, and either an X or y chromosome from the father, for a
complete of 46.
b) What % of the human genome is;
transcribed = more than 90% transcribed into RNA.
codes for protein = 1 percent
consists of transposons = 45%
c) The function of other transcribed material include the
transcriptional and translational regulation of protein-coding
sequences, scaffold attachment regions, origins of DNA replication,
centromeres and telomeres.
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