WorksheetsNatural selection - amplify
Total questions: 18
Worksheet time: 9mins
Any difference between cells, individual organisms, or groups of organisms of any species is called 细胞或者生物之间的不同叫做
natural selection 自然选择
variation 变种
generation 代
distribution 分布
How do genes determine an individual’s traits?
Genes directly cause traits
Genes are random and don’t lead to traits
Genes give organisms the ability to change their traits.
Genes are instructions for making protein molecules and protein molecules determine traits.
What is natural selection?
the process through which populations of living organisms adapt and change.
Parents choose which genes their offspring have when each individual is born
Why were the newts with the poison gene able to live longer than those newts without the poison gene?
the newts with the poison gene were able to live longer than the other newts
the newts with the poison live longer because they are able to reproduce more than the other newts
both claims are correct
neither claim is correct
The poison of the newt was a(n) __________________________ against the snakes in the environment.
generation
distribution
non-adaptive trait
adaptive trait
A new trait will only become more common in a population if it is _______________________________
harmful to predators
adaptive
recessive
dominant
Which location has guppies (孔雀鱼) with medium spot size as the adaptive trait?
Population in Brazil
Population in Venezuela
Which population has both adaptive and non-adaptive traits?
What changed in the environment to cause evolution?
The water temperature increased.
The water temperature decreased.
The water temperature did not change.
Which prediction supports the following statement? Red is the adaptive trait to survive predators.
What change in the environment caused the evolution? 岩石越小，越适合斑点小的鱼生存。
The amount of large riverbed rocks increased.
The amount of small riverbed rocks increased.
The amount of riverbed rocks did not change.
How did the cactuses (仙人掌) evolve from 1970 to 2015?
Medium spine size became an adaptive trait.
Medium spine size became a non-adaptive trait.
Small and large spine sizes became adaptive traits.
Which population has evolved to run away from predators faster?
What change in the environment caused the evolution?
The tree bark became gray.
The tree bark became black.
The tree bark became black and gray.
The tree bark became white.
True or false? Thick beaks are the non-adaptive trait in the population.
True
False
Why did the population evolve from medium to thick?
Medium is the adaptive trait.
Thick is the non-adaptive trait.
The environment became more cold.
The environment became more hot.
What happens to giraffes over generations when they are moved from the wild and placed in the nature preserve?
Giraffe height becomes shorter.
Giraffe height becomes taller.
Giraffe height does not change.
Giraffe height becomes medium.
What happened to beak length over generations from 1960 to 2010?
The distribution of short beaks increased.
The distribution of long beaks increased.
The distribution of medium beaks increased.
The distribution of medium beaks decreased.
