What three processes c;wy+6arnhx ;igm u.we 9v4xd-an increase variation in a population?

  Which of the following statement(s) are possible consequence8ll05ndcg ( u3 jxa.(. ui nvzjo(wsu6s to a polypeptide if a base substitution muw(iu3lxln 5(usuca.8. jov0jd6g zn (tation 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 beeq9m 4dhbts.mn)f(ub / zhx-)sn taken from exon 1 of DNA within the human insulin gene. Which sequence corresponds to a deletion mutation in the sequence? /tb)mbmn h.hd(4-qs fz xus9)

  What is a possible catsbce/ 3(xefk vt579buse of a genetic mutation?

  In species that do not carry out sexual reproduction, whaae)ch9b ua1ndjx*p/v) n( 3 rzt is a possible cause oa 9r1 xc3b)pan(nz*e/jvh u)d f variation?

  Shown below is the single base substitution mutation that causes sickle cell qne y xwa --,;pwk6p2banaemia in individuals who are homozygous for the allele.a-q nw6;k-bxep p2w,y Which of the following is a result of this mutation?

  Which statement about mutation+qg7 10fts.(jeejiww s in germ and/or somatic cells is correct?

  This table is a short section of the output from a DNA sequydq2brq*4yj/y ) gk:*gkc mcw-h* nn 7ence database comparing the cytochrome ny2kmcj yb kq:c) w*yhg-/d4 g*q*r n7C gene sequence in two species. What does it show?

  A population of plants with no resistance to herbivores may gef472 a x;it ;p7svlhlii1+gdevelop into a population of plants that secrete a compound toxic to herbivores. How could this change oc;;l1 g2atii4+evhpisxf7 7 glcur?

Different species of living organisms have different numbers of genes characterv*f0)lx3yj)*gx0 v ork1rkr ristic to them. The table shows the eskj30royr*v1gxv* rflk xr0)) timated 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 k-.r;pjd* ggk of the Human Genome 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 mutam+lb9(w;j+pi(my xk miwoq7+tion 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.