What three processes canbr8g7xc0 :c59 fxwrb qxpdp)- increase variation in a population?

  Which of the following statement(s) are possible consequences to a polypeptidj3/cfwy ghi xr/8dj.,e if a base substitution mutatiihxw. gr /cjdjy3 f/,8on occurs?
I. A shorter polypeptide chain is translated
II. An altered polypeptide chain is translated
III. There is no change to the polypeptide sequence

  The DNA sequence shown has been taken from exon 1 of DNA within t0mv gwy)-b+8 i1rx;l ze+uai mhe human insulin gene. Which sequence corresponds to a deletion mutation in the sequenarm)ie-+1mwgyxz ;v80 i l+buce?

  What is a possible cauv c(6ty5n n-xz3zga2 zse of a genetic mutation?

  In species that do not carry out sex8 u6/w6c 9z ax-j b/attuap/orual reproduction, what is a possible cause ofacrj6p/ ata /6/u8ubotz xw9- variation?

  Shown below is the single base substitution mutatiop8j / uohqaox-*0l iqkery(/:f/dw)hn that causes sickle cell anaemi*l-o(f:8x jquyerdp /kaq 0h wi)/oh/a in individuals who are homozygous for the allele. Which of the following is a result of this mutation?

  Which statement about mutations in germ and/or somatic cells i )7xv iv9a:xp)lr nc4 ; dht2 2l(zg6jzeo)rkvs correct?

  This table is a short sectia ;)tl,jdwcp (on of the output from a DNA sequence database comparing the cytochrome C gene sequence in two spea(d ; ,)wjlptccies. What does it show?

  A population of plants with no resistance to herbivormxpm cx9/tqot b.p78*es may develop into a population of plants that secrete a cpq97m tp. 8/mxb ox*ctompound toxic to herbivores. How could this change occur?

Different species of living organisms have differenigf ;kjb: w2phr5c6 6qt numbers of genes characteristic to them. The tajqk g5 ;rhwci6b2: 6pfble shows the estimated number of genes for five species.
Species Estimated number of genes
Escherichia coli (bacteria species) 4,000
Drosophila melanogaster (fruit fly) 13,000
Canis lupis familiaris (dog) 20,000
Homo sapiens (humans) 30,000
Oryza sativa (rice) 40,000
1.Using the information in the table deduce the estimated number of loci in a human genome.

2.Explain how a mutation can affect a characteristic.

1.Outline the outcomes of the Human Genomebiv/d5i1;gde4 5g hta Project (HGP).

2.Variation sometimes refers to the differences between individuals of the same species. Describe the role of genes in variation.

3.The frequency of the sickle cell allele is higher in regions of the world where malaria is prevalent. Explain the cause of sickle cell anaemia and the correlation between the frequency of the sickle cell allele and the prevalence of malaria.

1.Describe how a mutat jpedsikd di2zqe*0*s3 k;4x /ion may be a silent mutation.

2.Outline five causes of gene mutations.

3.Compare and contrast the consequences of mutations in somatic and germ cells.