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WorksheetsEvolution and Dna
Total questions: 20
Worksheet time: 11mins
Evolution is best defined as:
the process which organisms die.
the process which organisms change over time.
the process which organisms that are extinct become revived.
the process which non-living things fossilize.
The solidified remain or imprint of a once living thing are called:
Fossils
Homologous Structures
Vestigial Structures
DNA
What type of evidence for evolution is represented in the picture above:
Fossils
Vestigial Structures
DNA
Homologous Structures
How does embryology support the Theory of Evolution?
It shows that they have a common ancestor because of their similarities.
I'm not sure.
Animals change over time.
it does what now
Thymine bonds with ______________.
Guanine
Thymine
Cytosine
Adenine
Cytosine bonds with ______________.
Adenine
Guanine
Cytosine
Thymine
What do genes do?
make proteins
store energy
create covalent bonds
create hydrogen bonds
A segment of DNA that codes for a trait
gene
centromere
chromosome
chromatid
A version or variation of a gene
trait
gene
allele
DNA
The alleles that an organism has/inherits are its
genotype
phenotype
chromosome
recessive
The observable expression of a trait is its
phenotype
genotype
chromosome
allele
When an organism has two of the same alleles, it is called
homozygous
heterozygous
recessive
dominant
When an organism has two different alleles, it is called
homozygous
heterozygous
recessive
dominant
Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.
10, 20
25, 100
23, 46
46, 92
