What three processes can increase varipuhuer6*5 y7 c6p1j heation in a population?

  Which of the following statement(s) are possible consequencat71:3 ekk1 ;vzzne hnes to a polypeptide if nz 3zek 1k;ahtev:1n7 a 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 hi//w 8gpn2s lb-qi.cq+fz r +muman insulin gene. Which sequence corresponds to a delet/lfw2.-z i rmic/n+q8q g +psbion mutation in the sequence?

  What is a possible cause ofz;9famd,)*7ljq x7 inpp whl: a genetic mutation?

  In species that do not carry out sexual reproduction, what9j0hjd si4zy-f )md*iu1nc0h is a possible cause of variats*f hdd9-u40in ji cj) zhym01ion?

  Shown below is the single base substitution mutation that cae /tq/s2j))ht6qy s-q:fumz euses sickle cell anaemia in individuals who are homozygous for the allele. Which of the following is a result of this mutation?m-t/ ezq2f)qqtu:) 6hsjs/ ye

  Which statement about mutati5wmnq6) :l1w2 oqrrjzons in germ and/or somatic cells is correct?

  This table is a short section oc l:(qsw x7 e5;tgdl:*jrwrr7f the output from a DNA sequence database comparing the cy7sjll et*r7 ;qd rg xw5c:(:wrtochrome C gene sequence in two species. What does it show?

  A population of plants with no resistance to herbivores may develxuv;mij 4m hu k fq/(m::j3yo2op into a population of plants that secrete a compound toxicx (vm:jm 2k/u4uhq;o myjif3 : to herbivores. How could this change occur?

Different species of living organisms have different numbers of genfl+ em8omy7k +y u7aa3es characteristic to them. The table shows the estimated number of genesa78ye3f++ aoy m 7lkmu 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 G x/o c.cr 4,:miibe.ycenome 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 sii1ugk :sf7 zl *tkppsqh)lh 6*qb54:ac nl7(clent mutation.

2.Outline five causes of gene mutations.

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