Exam qs Flashcards
Some cat breeders select for polydactyly (dominant allele)
Describe how this would affect the frequencies of the homozygous genotypes for this gene in their breeding populations over time
Homozygous dom increases
Homozygous recessive decreases
Suggest which community A-D is most stable
Explain what makes this the most stable community
D
More species present
More complex food webs
Many species in the pioneer community are xerophytes
Suggest and explain how having sucked stomata is an advantage to these plants
Sand drains easily
Sunken stomata reduce transpiration
Reduces diffusion/water potential gradient
explain the increase in the number of species of hemiptera
More species
More niches
More feeding opportunities
Explain how successful resulted in the formation of the forest
Pioneer species colonise land
E.g. of change in env (soil that can retain water)
Enables change in species
Conditions change further
