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1.1Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to
1.1\ in the ANSWER BOOK , for example
1.1.1
1.1.2
1.1The structure above is involved in the process of ranscription eplication ranslation crossing over
1.1.4
1.1
1.1.6elow are possible reasons for selecting each characteristic (i\ larger leaf area inc rease the rate of photosynthesis
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1.1.8Use to represent the relevant alleles of the characteristic. The possible genotype of individual will be only. only.
1.1A man with blood group and a woman with blood group children. Their first child ha blood group and the second child
1.1.10
1.2Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to
1.2in the ANSWER BOOK
1.2.9A genetic cross involving two different characteristics The variety of life forms that exist on Earth The opening in the skull through which the spinal cord enters A group of organisms of the same species living in the same habitat
1.3THREE babies from three different sets of parents were born in a hospital TWO
1.3.3Which TWO babies from and were Give the sur names of the biological parents
1.4How many of the following are present in the karyotype (a\ (b\ (c\ Chromosomes Autosomes Gonosomes (1\ (1\
1.4How many chromosomes would be present in the gametes produced by this individual? (1\
1.4Is the karyotype in the diagram that of a male or a female? (1\ (5\
1.5The diagrams below represent a cell in two different phases of meiosis. TOTAL SECTION A:
1.5.1Which phase is represented i (a\ (b\ Diagram Diagram (1\
1.5Provide labels for (a\ (b\ (c\ (1\ (1\ (1\
1.5Give the functions of the part labelled (a\ (b\ (2\ (1\
1.5.4Are the cells in Diagram haploid or diploid (1\
1.5Name the process that would have cause variation in structure (1\ (10\ Diagram
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2.1In rabbits, black fur is produced by the allele ( \ and white fur by the allele ( The table below shows the genotypes of some rabbits. RABBIT GENOTYPE
2.1.1What is the phenotype: (a\ (b\ Produced by the recessive allele Of rabbit (1\ (1\
2.1.2Give the NUMBER only or of the rabbit(s\ that is/are: (a\ (b\ Pure bred Homozygous dominant (3\
2.1.3Use a genetic cross to show the percentage chance of rabbits and having offspring with white fur. (6\ (11\ 10
2.2The diagram below represents two types of shrimp. Each type live in shallow seas on opposite sides of a strip of land. Adapted from
2.2.3Give ONE conclusion the scientists came to after the investigation
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2.3Describe how speciation occurs through geographic isolation (5\ In an investigation to determine whether the two types of shrimp were from one species, scientists placed
2.4.2How could the validity of this investigation be increased Identify the: (2\ (a\ (b\ Independent variable Dependent variable
2.4.4Explain wh y the scientist include pond in this investigation Describe how Darwin s theory of natural selection can be used to explain why the guppies in pond
2.5What is this type of diagram called? How many genera are shown in th diagram above According to this diagram, which: (1\ (1\
2.5.5Give ONE example of an Australopithecus africanus fossil found in South Africa. Name TWO Homo species besides
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3.3.2Name FIVE characteristics that humans share with African apes. Describe how each of the following structures is different between humans and apes: (5\ (a\ (b\ Spine Pelvic girdle
3.3.3Explain the significance of the changes to the teeth of humans that show progression in evolution. (4\ (13\
3.1In rice plants the allele for high yield ( \ is dominant over the allele for low yield ( \. The allele for a tall stem ( \ is dominant over the allele for a short stem ( There are two varieties of rice plants,
3.1.5Give the phenotype of variety Give ALL the possible genotypes of the gametes of variety Give the genotype of the variety the plant breeder wants to produce. Explain why the plant breeder would want to produce a rice
3.2Tabulate THREE differences between Lamarckism Darwinism (7\
3.3Humans and African apes share many characteristics yet each is a distinct species. 14
3.5Describe how a gene mutation may result in the formation of a protein that is different from the one that is required. (6\ [40] TOTAL SECTION B: Albinism is an inherited condition caused by a recessive gene40
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