What three processes can increase variation pby 2rlz 0ym9+in a population?

  Which of the following statement(s) are possible consequences to a poucb0 z8xif( 4.: gjnc-s0hz vzlypeptide if a base subsg4uz8xnz (zc.ch:si0 fbv0j -titution 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 human insulibpxch7 .z1i43kysab+ n gene. Which sequence corresponds to a deletion mutah71 ps4.xy3bia+ zb cktion in the sequence?

  What is a possible cause ofafb 8)o9odb 5o q;pj(z a genetic mutation?

  In species that do not y/0hw( j1ugko : it(cqcarry out sexual reproduction, what is a possible cause of variaohg:kui 0q1 cj w(t/y(tion?

  Shown below is the single base substitution mutation that causes (saq- s,l26oms 45 djfxom2ensickle cell anaemia in individa odm-m6q(exo 5,4js22n f ssluals who are homozygous for the allele. Which of the following is a result of this mutation?

  Which statement about mutations in germ and/ m 9/fniic rc3 4eo0/bp5vjzb4or somatic cells is correct?

  This table is a short section of the output from a DNA seque 02+ 8xrpz grj4vd1zgpnce database comparing the cdv4 28zxzrr+0 g ppg1jytochrome C gene sequence in two species. What does it show?

  A population of plants with no resistance.op1(b(k *y g: xtezmn to herbivores may develop into a populaybnox((gptm*z:1 e.k tion of plants that secrete a compound toxic to herbivores. How could this change occur?

Different species of living organisms have different numbers of genes chlbn-r zjo7sabd 4o)668o0kbv,5 am qnaracteristik4sav6j0 bmd)a5nrzb8 qobo,-6o l7 nc to them. The table 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 Genome Project (HGP2u zkv +wd7ks/44ppnw ).

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 siletv 0tsr-q7wex. 6q2pd grf+ ,ant mutation.

2.Outline five causes of gene mutations.

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