WorksheetsKS3 Natural selection and genetic modification
Total questions: 37
Worksheet time: 37mins
Why are advantageous traits more likely to be passed onto offspring?
Because they are more likely to survive and reproduce.
Because they come from dominant alleles.
Because they come from recessive alleles.
Because the organism knew it needed that trait, survives, and passes it on.
The differences among a species, like different bird beaks, is called ...........................
genes.
variations.
traits.
theories.
Hover your mouse over the image to make it bigger. What process is being shown in this image?
Variation
Natural Selection
Selective Breeding
Homeostasis
Organisms that are better adapted to the environment survive to pass traits to their offspring. What do we call this process?
Natural Selection
Homeostasis
Selective Breeding
Extinction
The more genetic variation a population has,
the more likely it is for some individuals to ......................
evolve
migrate
survive
mutate
Hover your mouse over the image to make it bigger. Domesticated dogs are an example of:
Natural Selection
Selective Breeding
Why is competition important for natural selection?
It shows which variations are more successful, allowing the organisms with those variations to survive.
It causes organisms, regardless of which traits they have, to die out, reducing the population size.
It causes organisms to get stronger due to having to outcompete other species.
Competition is not important for natural selection.
Who is the father of evolution?
Darwin
Mendel
Newton
Einstein
What is another name for natural selection?
survival of the smartest
survival of the fastest
survival of the biggest
survival of the fittest
Darwin wrote that organisms with traits that are best suited to the environment will ________________
increase in number
become extinct
Which of the following is NOT an example of natural selection?
People selectively breeding hamsters.
Insect populations developing resistance to certain pesticides.
Bacteria becoming resistant to antibiotics.
Male birds of certain species developing colorful feathers to attract female mates.
What characteristic did Darwin observe about the finches on the Galapagos Islands?
Their feathers
Genotypes
Their beaks
Their body sizes
What is a change in an organism that allows for it to survive in its environment?
homologous
vestigial
variation
adaptation
What is this an example of?
diversity of species
variation
vestigial structures
DNA studies
How do species evolve
Organism develop a trait and over their life and pass those to their offspring
Some organisms develop a trait that they see benefits other organisms
Some organism have beneficial traits which allow them to survive and pass traits to their offspring
Organisms that have weaker traits seek out and breed with those
The primary difference natural and artificial selection is
In nature selection the “pressure” comes from the environment; In artificial selection the “pressure” comes from humans (or another species).
In artificial selection the “pressure” comes from the environment; In natural selection the “pressure” comes from humans (or another species).
Natural selections is when humans breed the animal; Artificial selection is when humans direct genes directly.
They are different terms for the same concept.
Evidence show that all breeds of dog are the descendants of wolves. How did the huge variety of dogs arise in a few hundred years.
Genetics modification
Natural selection
Random chance
Selective breeding
What is the (sometimes controversial) process of inserting a desired gene in the genome of an organism?
Gene splicing
Gene cloning
Genetic modification
Weapon Plus Program
Why did the population of peppered moths in England change from light to dark after the Industrial Revolution? The industrial revolution produced a lot of smog and smoke, due to coal being used on a large scale.
Light moths were easy to see against sooty trees and were eaten
Light moths were killed by soot
The birds that ate the dark moths were killed by soot
Dark moths were produced by industrial processes
When every organism of a given species has died is called what?
Natural Selection
Homeostasis
Extinction
Selective Breeding
What is evolution?
no more individuals of a species left
gradual development of a species over time
differences in characteristics
the remains of plants and animals
What is a fossil?
no more individuals of a species left
development of a species over time
differences in characteristics
the remains of plants and animals
Which of these provides evidence that dinosaurs lived on Earth millions of years ago?
photographs
fossil record
cave paintings
Which two of the following answers are reasons species become extinct
destruction of habitat
gene banks
disease
biodiversity
What feature of the pepper moth evolved to allow them to survive when tree bark got darker?
size of wings
size of antenna
colour of the wings
pattern on the wings
Why did giraffes evolve to have long necks?
to reach water holes
to reach leaves on tree branches
to attract mates
Individuals that are well adapted to their environment will survive and produce
better looking kids
food
more offspring
fewer mutations
This is an ecological relationship in which two or more organisms depend on the same limited resource. e.g. water/food
Adaptation
Competition
Evolution
Natural selection
