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Test your basic knowledge |
CSET Genetics And Evolution
Start Test
Study First
Subjects
:
cset
,
science
,
genetics
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. How many codons are needed to specify three amino acids
Chargaff
Post -zygotic Mechanisms
Homologous pair
three
2. Form of reproductive isolation in which tere are differences in species courtship behavior
Phyletic Gradualism (anagenesis)
Ring Species
Behavioral (ethological) Isolation
Environment
3. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.
Monohybrid Cross
Cytosine
Fossil
Molecular biology
4. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.
Speciation
Comparative anatomy
Homologous Structures
Amber
5. Form of reproductive isolation in which two populations reproduce at different times
Gene pool
Temporal Isolation
Sedimentary Rock
Speciation
6. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor
introns
Evolution
analogous (Evolution Evidence)
Comparative embryology
7. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.
mRNA
Gene
Heterozygous
Chromosome mutation
8. Visual expression of a trait
Ring Species
Phenotype
NIche Isolation
body fossils
9. Selection for the ability to obtain a mate
that is complementary to a single strand of DNA
Homozygous
Sexual Selection
Balanced Polymorphism
10. Process by which one species gives rise to two or more species
Microevolution
Absolute dating
Speciation
Sympatric Speciation
11. A change in the base sequence of a gene
Hybrid Infertility
Gene mutation
Microevolution
Dihybrid
12. A base found in DNA (but not in RNA). This base pairs with Adenine.
Pentadactyl limb
Thymine
Gene Pool
ribose - phosphate - and a base
13. Consists of all genes - including all the different alleles - that are present in a population
Centromere
Gene pool
Adaptation
geologic time scale
14. Change to a chromosome in which a fragment of the chromosome is removed
Somatic
Deletion
Phyletic Gradualism (anagenesis)
Ecological Barrier
15. A unique combination of traits that are passed down from one generation to another.
molecular evidence
transcription
Heritable variation
amino acid
16. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups
Rosalind Franklin
Phenotype
restriction enzyme
Species
17. Natural selection that causes the frequency of a particular allele to move in one direction
Directional Selection
Hybrid
Hybrid Breakdown
Sequential Evolution
18. Which structure contains anticodons
tRNA
molecular evidence
Genome
amino acids
19. An ancestor that two or more descendants have in common
Natural Selection
If you lose one then you will still have one to back you up.
Common Ancestor
Extinction
20. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.
Gene
Habitat
False RNA
nucleus
21. Synonym for protein; chain of amino acids
polypeptide
index fossil
Phenotype
Chromosome mutation
22. Periods of little adaptive change
Stasis
Convergent Evolution
Mate Selection
Parallel Evolution
23. One of the identical rods of a chromosome.
Stabilising selection
Vestigial structure
Chromatid
chromatin
24. Any agent that can cause a change in DNA
Mutagen
Hybrid
Heritable variation
Allele Frequency
25. Another name for a gene
Gene
Allele
deoxyribose and phosphate
The cell uses information from mRNA to produce proteins
26. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells
Histone
Speciation
Reproductive Isolation
Medel worked with _____
27. Determined the concept of complementary base pairing
Homozygous
Chargaff
Germ
Medel worked with _____
28. Process by which a ribosome uses the code on mRNA to make proteins
Phyletic Gradualism (anagenesis)
Stabilising selection
Variation
translation
29. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.
Homozygous
Gene Pool
nucleotide
Gene flow
30. Dna moves during electrophoresis because of...
its negative charge
tRNA
transcription
Directional Selection
31. Breeding organisms with specific traits in order to produce offspring with identical traits
Insertion
Artificial selection
Guanine
mRNA
32. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.
Thymine
Cast
Bottleneck Effect
Analogous Features
33. A taxon originating from and including a single common ancestor
Mutation
Monophyletic
Directional Selection
watson and crick
34. Evolution resulting from small specific genetic changes that can lead to a new subspecies
Biogeography
Dominant
Microevolution
Cenozoic era
35. The region of the chromosome that holds the two sister chromatids together during mitosis
Species
Population
Centromere
Balanced Polymorphism
36. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related
Monohybrid Cross
Divergent Evolution
DNA
Chromatid
37. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti
Geologic Evolution
Insertion
Mutation
Meiosis
38. Evolution of living things - based on evidence from the past and present.
replication
Endemic
Organic Evolution
Migration
39. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Convergent Evolution
amino acid
Organic Evolution
index fossil
40. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
Mutagen
NIche Isolation
true
Mechanical (morphological) Isolation
41. The preserved remains or traces of an organism that lived in the past
Artificial selection
Hybrid
Fossil
deoxyribose and phosphate
42. Inherited feature that tends to prevent species from interbreeding with other species
rRNA
Recessive
Isolating Mechanism
Analogous structures
43. Independent segregation of genes during the formation of gametes
deoxyribose and phosphate
Chromatid
rRNA
Independent assortment
44. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.
Evolution
Phenotype
Gene mutation
GATTACA
45. Because of base pairing in DNA the amount of
Mendel's Principle of Segregation
Speciation
cytosine in DNA is about equal to the percentage of guanine molecules
Sympatric Speciation
46. Method of replication that implies that each new strand of DNA is half original and half new
Amber
Mutation
Disruptive Selection
Semi - conservative replication
47. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
Sub - species
Endemic
Hybrid
Genotype
48. The evolutionary process by which a species becomes better suited to its niche.
Balanced Polymorphism
Adaptation
Organic Evolution
Mitosis
49. The structure on a tRNA molecule that allows it interact with an mRNA molecule
Chromatid
anticodon
Centromere
Gene Flow
50. A DNA double helix is held together in the center by between nitrogenous bases
Ecological (habitat) Isolation
Heritable variation
hydrogen bonds
Behavioral (ethological) Isolation