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WorksheetsDNA, Adaptation, Mutations, Reproduction
Total questions: 25
Worksheet time: 17mins
What is fertilization?
When you put food on the plants
The joining of the egg and sperm
A part of mitosis
The last step of meiosis
The variety of genes and alleles that exist in organisms
independent assortment
chromosomal abnormalities
genetic diversity
mutations
A physical or behavioral trait an organism is born with that helps it survive is -
A mutation
An adaptation
Genetic variation
Gene flow
Individuals in a population that have the traits needed to survive in the environment get to survive and reproduce. Their offspring inherit those traits. Over time, a greater percentage of the population will have those successful traits.
Natural selection
Selective breeding
Artificial selection
Mutations
Random changes in the DNA are -
Natural selection
Mutations
Adaptations
Genetic migration
What happens during meiosis?
two sex cells combine
chromosome pairs separate and are distributed into new sex cells
each sex cell copies itself to form four new chromosomes
chromosome pairs remain together when new sex cells are formed
When sex cells combine to produce offspring, each sex cell will contribute
one fourth the number of chromosomes in body cells
half the number of chromosomes in body cells
the normal number of chromosomes in body cells
twice the number of chromosomes in body cells
Cloning results in two organisms that are
both adult mammals
produced from cuttings
genetically similar
genetically identical
Binary fission is the bacterial process of
asexual reproduction
obtaining food
producing energy
forming endospores
The process by which a new organism forms from the joining of an egg cell and a sperm cell is called
asexual reproduction
sexual reproduction
adaptation
budding
The cell that is formed when fertilization occurs is called a __________________________.
zygote
mutation
chromosome
cytoplasm
What conclusion can be drawn from this picture?
an egg cell and a sperm cell unite to form a zygote
kittens will always look like the father
sperm cells come from the mother
mitosis produces egg and sperm cells
What is the process shown in this figure?
budding
cloning
regeneration
vegetative reproduciton
A sea star has one of its arms break off. That arm grows into its own separate organism through ____________________.
sexual reproduction
regeneration (fragmentation)
spindle fibers
chromosomes
The process that produces haploid sex cells is __________________.
mitosis
fission
meiosis
interphase
When Charles Darwin visited the Galapagos Islands in the 1800s, he observed many types of organisms that were similar by lived on different islands. The four species of mockingbirds found on the Galapagos Islands are shown below. Each species lives on a different island.
These species are very similar but the Hood mocking bird has a longer beak than the other three species. Which of the following best explains this difference?
The Hood mockingbird need a longer beak for defense against predators.
The Hood mockingbird originated from a different type of bird that the other species.
The Hood mockingbird's longer beak is an adaptation to the food available in the bird's habitat.
The Hood mockingbird's beak stretched to reach its food, and the longer beak was passed down to its offspring.
