What three processes can increase variation in awq6xhu34hiton0/ hs0c*/h fr population?

  Which of the following statement(s) are possim /5ihwo2 k*g.6y xtqqble consequences to a polypeptide if a base substitution mutat2.qqkmyg5oxt wih/*6 ion 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 o i3ptg/:cm hq 8y:4igxpoie9 n 89w8iof DNA within the human insulin gene. Which sequence corresponds to a deletion mutation in the sequencp4 /n :ig:8o89qiewoghi m3xty8ip9ce?

  What is a possible cause odax37v2/1srvb y/ zrm c/wpx2f a genetic mutation?

  In species that do not carry out sexual reproduction, what is a possible ca5zca)ct7z)) 70 pcj6s i sqkjsuse of vari 5t sc6cji07s)qzak7j)p cs)zation?

  Shown below is the single base qh(;bc8)op) grq9dpd3n ju;u substitution mutation that causes sickle cell anaemia in individuals who are homozygous for th(u3 r8gquqppbdo9;djc n)h ; )e allele. Which of the following is a result of this mutation?

  Which statement about mutations in germ and/or somatic cells is co4: 2rbgvo,8 rv55evr lztemlh-w ;r+urrect?

  This table is a short section of the output from a DNA seq kp jyjiaa-ghzo:92: ) 9a+hvouence database comparing the cytochrome C gene sequence in two species. What does it showp-gja k y o :+:zoaa9hhji9)2v?

  A population of plants with no resistance to herbivorethkc y21y1j 3rs may develop into a population of plants that secretryhc kj1y12t3 e a compound toxic to herbivores. How could this change occur?

Different species of be v jq+78cuu w2 5fvk)yh7b4sliving organisms have different numbers of genes characteristic to them. The table shows 7w cbhby8v kv4euf2q j5us7+)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 (HGP).-,pu18ze ts10elw vq y

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 mutat5,qf wf, x8v y5dm/kerion 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.