What three processes can increase variation in a5ro0) va 0pgd kq zdi7q/j-/io population?

  Which of the following statement(s) are pos)+0pgwnet y. :)k,-efv-il qv mf7jd bsible consequences to a polypeptide if a base substitution mutation occurs0ejmt lfdwk-)i-epv+7 bf.nvy: )qg ,?
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 DNAhbc7r n6ej(s. within the human insulin gene. Which sequence corresponds to a deletion mutatio7jcn6.s hber (n in the sequence?

  What is a possible cause of acqi w0 3c;a0x)+qlske genetic mutation?

  In species that do not carry 8b 34m: 8wzt/a omkuqqk4dzd1out sexual reproduction, what is a possible cause of variation? 8/wdammqo kzzuk qtd1 43b84:

  Shown below is the single s*1xl6j*jur abase substitution mutation that causes sickle cell anaemia in individuals who are homozygous for the allele. Which of the following is a result ofr1*s*xl 6ajj u this mutation?

  Which statement about mutations in germ and/or somatic cells is v0;/h)zomk s yswa8u; correct?

  This table is a short section of the outja 6l g2n7:.n 7z fd8o/ibcbbgput from a DNA sequence database comparingbd/6 jiba8o7 zf bl7n.g2 cg:n the cytochrome C gene sequence in two species. What does it show?

  A population of plants with no resistance to he3yevtld 1 p46prbivores may develop into a population of plants that secrete a c1y3 4dvept6 lpompound toxic to herbivores. How could this change occur?

Different species of 8 uwre7v gpiz0ch;p) 7living organisms have different numbers of genes characteristic to them. The table shows the estima rihz7vp87guwc p;0)eted 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 Genome Project (HGP). * 9mcnq6vb it-1oan).uvz jp5

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 mut0lc +t+m2vwec pr -y,9,jzfjration 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.