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problem 1:

a) What do you mean by the term evolution?

b) Name either of the scientists accountable for the Theory of Natural Selection

problem 2: In antirrhinum (or snapdragon) there is no dominance between the allele for red and the allele for white flower. Heterozygous individuals have pink flowers. The allele for tall stem is dominant to allele for short stem.

These pairs of alleles are situated on various chromosome pairs.

a) What is the importance of the fact that the two allele pairs are positioned on various chromosome pairs?

b) The plant which had pink flowers and was heterozygous in respect of stem height was crossed with one which had white flowers and a short stem.

i) By using appropriate symbols find out the genotypes of all the possible offspring of this cross.
ii) For each of your answers, state the phenotype which would result.

problem 3: Differentiate between the members of each of the given pairs of terms, by writing a sentence regarding each member of each pair.

a) Gene and allele.

b) Homozygous and heterozygous.

c) Genotype and phenotype.

d) Linkage and sex linkage.

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  • Category:- Biology
  • Reference No.:- M99077

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