What three processesva wqs. fq fi e4-)u5: l.dqvgog.)l4j can increase variation in a population?

  Which of the following statement(s) are possible consequences to a polype+w0k :fl:8nslqg ivf5 ptide if a :sv kg+805qnf wlli:f 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 ,gd bq9y;6vwxr.)vdobeen taken from exon 1 of DNA within the human insulin gene. Which seque rd,gqxowv;.v byd96 )nce corresponds to a deletion mutation in the sequence?

  What is a possible cause of a genetic mutatjxo v cx5tt;tingq03m5v6f)i. t1k8 w ion?

  In species that do not carry out sexualpz)v5 zjh28 4viif mt; reproduction, what is a possible cause of variati;pmvvfz8 t5)2 jh4ii zon?

  Shown below is the single base substitution mutation tsi01 kj- jkgh9*iht7c/ i9r jchat causes sickle cell anaemia in indivis70 9khj19jhi tcr /jg-ki*ci duals who are homozygous for the allele. Which of the following is a result of this mutation?

  Which statement about mutatmc-jkl94g3wtkcliyp 6 1 dznv++m6l2ions in germ and/or somatic cells is correct?

  This table is a shortzr77)n ef s1fees,e 9b section of the output from a DNA sequence database comparing the cytochrome C gene sequence in two species. What does nbz rf97e1,) s7sfeeeit show?

  A population of plants with no resistance to herbivores may develop c)75 )gn14f vja hliwpinto a population of plants that secrete ca)ghl 754 i 1pwjvfn)a compound toxic to herbivores. How could this change occur?

Different species of living organisms have different numbers onma + 30nmy2yp(7e9-pgi9 -xehhonx sf genes characteristic to them. The table shows the estimated number of genes for five spen n73e-oyn099imh gapp-(s eym2x xh+cies.
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 (H ea uqs6:rl/p)GP).

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 madq9 y,lg4c, el rsv-u6y be a silent mutation.

2.Outline five causes of gene mutations.

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