WorksheetsEvolution
Total questions: 12
Worksheet time: 15mins
The accumulation of heritable changes experienced by organisms and populations to adapt to variations in the environment and survive is known as:
None of the above.
Speciation.
Biodiversity.
Adaptation.
Where are hereditary traits stored in all organisms?
In the blood
In the brain
In the DNA
In the heart
In a cold environment what would be some adaptive traits? Sellect all that apply.
thick blubber
thick fur
thin fur
strong muscles
Natural selection occurs during the lifetime of a single organism.
True
False
The figure shows how natural selection of a single-trait gene affects lizard survival.
Which of the following most likely causes the changes in allele distribution?
The allele for light gray coloration disappears from the population. This may be because light gray lizards are more visible to predators and therefore they might be less likely to survive and reproduce.
The allele for black coloration decreases fitness and becomes less common. This may be because black coloration keeps the lizards cool during hot summer temperatures.
Medium gray coloration in lizards appears to be a neutral mutant allele that allows the lizards to hide better from predators. This leads to increases in phenotype and allele frequency of gray coloration.
Because black and medium gray lizards are less visible to predators, these alleles are neutral to natural selection and therefore will not disappear from the population of lizards.
