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Predict the effect of increasing global temperatures on the continued presence of the W chromosome in this species of lizard. Scientist claims that in this species the W chromosomes is unimportant in sex determination. Instead proteins that are encoded by a gene or genes on the Z chromosome and that are maximally expressed only at certain temperatures are responsible for determining wheatger embryo will develop as female or males

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Reptile shows temperature dependent sex determination where the temperature determines whether the reptile such lizard is either a male or female during embryonic development. In America dragon lizard where the ZW chromosome determination is used, at a very high incubation temperature there is a change from a genotypic male with genotype ZZ to a phenotypic female with genotype ZW or ZZ. Hence an increase in temperature will lead to reverse of a male genotype to female phenotype.

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