Describe the differences in gametogenesis between human males and females.
From Table 4.1, identify the gene locus with the greatest genetic variability and name the process responsible for the different lengths of the alleles.
Using Table 4.1, state and explain which animals are heterozygous at one or more gene loci.
Clones are organisms or cells that are genetically identical. Students suggested the following about the Komodo dragon offspring (1-4) produced by a female that had never mated with a male: • Offspring 1 and 2 are clones of one another, and offspring 3 and 4 are clones of one another. • Offspring 1-4 were produced by asexual reproduction using mitosis only. Explain, with reference to specific loci, whether the data in Table 4.1 support or do not support these suggestions.
Reproduction without a male has evolved in a number of species that live on islands. Suggest advantages and disadvantages of this type of reproduction in an island habitat.