What three processes can increase variation in apftw7ywq9,1fzm;ojf f .1t;-xcl 9ve population?

  Which of the following statement(s) are possible consequences to a polypeptexing;8 e2 5cuh 3mhy9ide if a b8eigc2m ehxnu 5 y;39hase 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 ph t.;475b 1rvf+ m)dakvzwn cwithin the human insulin gene. Which sequence corresponds to a delet4tvwc7dab;)z n k.1+pfh5 mrvion mutation in the sequence?

  What is a possible cause of a genetic muta pt)z2r ed84 ,h7bnnxxtion?

  In species that do not carry out sexual rep 4sscl:mh- ugo5ccw+*pbr 1n*roduction, what is a possible cause of variationn:*bc*1oc5rlh u 4gmsswpc-+?

  Shown below is the single base substitution mutation ;f/vt je:am1s q/mev6that causes sickle cell anaemia if :m;amv1q/ eet j/v6sn individuals who are homozygous for the allele. Which of the following is a result of this mutation?

  Which statement about mutations in gpos/j2 (no*uk erm and/or somatic cells is correct?

  This table is a short section of0nl f 8sz;ceh, the output from a DNA sequence database comparing the cytochrome C gene sequencnzcs,0 el;fh 8e in two species. What does it show?

  A population of plants with no resistance to herbivores may develop into a pwfia7/5w ty50iw0 jw go:bpkr1-c0a population of plantsrip0 t pcwkwa715/:oj bw 0 fgi-ay05w that secrete a compound toxic to herbivores. How could this change occur?

Different species of living organisms have different numbers of genes charact,tk+alhsuv7 .e20mwlsi3j ( neristic to them. The t7 .t03le2 hsla,v( sumjw+ni kable 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 Genomek3nkr t2 u5;bl 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 a silent m;(xh h3h7nkfzoa1t w fp1/m )kutation.

2.Outline five causes of gene mutations.

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