What three processes can increase variation in a popuu9kzxd2 5do*clation?

  Which of the following statement(s) are possible consequences to a polype pxw.rn3 h-jec2vb.)l(k a5dq ptide if ac qe.l 5dw2b)(kn j-pr xa3.vh base substitution mutation 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 the humarkj.h.r cy nf 7l8):bdn insulin h jkf8)cld y r7rb..:ngene. Which sequence corresponds to a deletion mutation in the sequence?

  What is a possible cause of a genega9uu;46ok (p7lpwqd h**ht mtic mutation?

  In species that do not r0j hfqgy:7/ /x m anh)t/ngjwms.8h5 carry out sexual reproduction, what is a possible cause of variathmh jxj5:)r/h 7m a qygswg/. 8/nftn0ion?

  Shown below is the single base substitution mutation that causes sickle juy11/ *ctvm;+ b t0s 04zkb ry1vuoelcell anaemia in individuals who are homozygous for the allele. Which of the following is a result ob *vs 1u104y1m lrjk;ovyzb eu tt/c0+f this mutation?

  Which statement about mutations in germ and/or somatad- m9ri/6twx 58od2sr4 m2lkn6fwze ic cells is correct?

  This table is a short section of the output from a DNA sequence da 6q1q ldn 5v2a x/1rd/ngt,jx j5msy+htabase comparing the cytochrome C gene sequence in two species. What does ,ann+lmx yhqdvg/ 6r/1j512 dj st x5qit show?

  A population of plants with no resistance to herbivores may develop7 mexy+7utr s 94tnx 4t0(5e ;tzecvhha)u o+u into a population of pt y9eaton e;ue4 x)vh77 hmx ++tzrt0c5suu4( lants that secrete a compound toxic to herbivores. How could this change occur?

Different species of living organisms have different numbers of genes characterks 1n0 puqm iq6y6,sa-istic to them. The table shows the estimated number on-6sy,q1akmipq u s60 f 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 Hunaus- g9n 9dcr c(q38jman 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 mutation may be y -//4wn(ev-x.of d q oyu2hkfa silent mutation.

2.Outline five causes of gene mutations.

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