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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. A DNA double helix is held together in the center by between nitrogenous bases
hydrogen bonds
Variation
cytosine in DNA is about equal to the percentage of guanine molecules
Habitat
2. Speciation which does not involve a period of geographical separation
Sympatric Speciation
deoxyribonucleic acid
Allele Frequency
anticodon
3. Independent segregation of genes during the formation of gametes
Bottleneck Effect
Independent assortment
Homozygote
Population
4. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.
Post -zygotic Mechanisms
Test Cross
Evolution
anticodon
5. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are
Somatic
Chromosome mutation
Habitat
tRNA
6. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
rRNA
Recombination
Adenine
Isolating Mechanism
7. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)
Mendel's Principle of Segregation
Genetic Equilibrium
anticodon
Common Ancestor
8. Process by which an organism is slowly turned to stone as the body is replaced by minerals.
Sequential Evolution
Petrification
Mitosis
Microevolution
9. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area
Ecological (habitat) Isolation
Natural Selection
Gamete Isolation
Founder effect
10. How many codons are needed to specify three amino acids
Dominant
geologic time scale
three
trace fossils
11. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor
Petrification
Character Displacement
Isolating Mechanism
Comparative embryology
12. Movement of organisms ro of from a population
Homozygous
hydrogen bonds
Founder Effect
Migration
13. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks
Monohybrid
trace fossils
Analogous structures
geologic time scale
14. Trait evolves overtime; NO common ancestry
Hershey and Chase
Heritable variation
Germ
analogous (Evolution Evidence)
15. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long
mutation
Industrial Melanism
Hybrid Breakdown
DNA
16. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations
Phyletic Gradualism (anagenesis)
tRNA
index fossil
Mendel's Principle of Segregation
17. Transcrition occurs in the...
GATTACA
Mutagen
restriction enzyme
nucleus
18. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related
Hominid
RNA polymerase
that is complementary to a single strand of DNA
Divergent Evolution
19. Pea plants
Medel worked with _____
Punctuated Equilibrium
body fossils
NIche Isolation
20. A combining of genes or characters different from what they were in the parents
Recombination
clinC
Hybrid Breakdown
Niche
21. The preserved remains or traces of an organism that lived in the past
Mendel's Principle of Segregation
Mate Selection
Fossil
Crossing over
22. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.
vestigial (Evolution Evidence)
Behavioral (ethological) Isolation
Molecular biology
If you lose one then you will still have one to back you up.
23. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.
Locus
Punnett Square
restriction enzymes - sticky ends
Bottleneck Effect
24. Even if the gametes of the two species meet - fertilization does not occur
Gamete Isolation
restriction enzymes - sticky ends
Stasis
Temporal Isolation
25. Periods of rapid evolution punctuated by periods of little change
3 nucleotides
Punctuated Equilibrium
Adenine
Extinction
26. A limb with five digits (fingers)
geologic time scale
Chromosome mutation
Variation
Pentadactyl limb
27. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest
Population
proteins
body fossils
Natural Selection
28. Determined the concept of complementary base pairing
Autosomes
Chargaff
Chiasma
Mold
29. The backbone of DNA consist of...
deoxyribose and phosphate
polypeptide
Homozygous
Divergent Evolution
30. When F1 is fully fertile but F2 has low fertility (rice - cotton)
Analogous Structures (analogies)
Mutation
Sub - species
Hybrid Breakdown
31. What is one benefit for having two strands of DNA?
Hominid
If you lose one then you will still have one to back you up.
Gene
Hybrid Inviability
32. Natural selection that causes the frequency of a particular allele to move in one direction
Reproductive Isolation
Phyletic Gradualism (anagenesis)
Genome
Directional Selection
33. DNA is made of...
Parallel Evolution
nucleotides
Fossils
Meiosis
34. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)
Precambrian era
Analogous structures
amino acids
Cast
35. Process by which a ribosome uses the code on mRNA to make proteins
translation
amino acid
Duplication
restriction enzymes - sticky ends
36. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.
Dihybrid Cross
Absolute dating
codon
genes
37. How often a particular gene occurs in the population
Common Ancestor
trace fossils
Gene frequency
RNA polymerase
38. A change in the base sequence of a gene
Pre -zygotic Mechanisms
Gene mutation
Thymine
Nucleotide
39. Proteins are made of...
Heritable variation
amino acids
introns
Punctuated Equilibrium
40. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.
Sedimentary Rock
Directional Selection
Homologous pair
rRNA
41. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.
If you lose one then you will still have one to back you up.
Reproductive Isolation
Homologous pair
Ecological (habitat) Isolation
42. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell
Germ
3 nucleotides
Stabilising
mRNA
43. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes
Phyletic Gradualism (anagenesis)
Endemic
Haploid/Monoploid
Adenine
44. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA
mRNA
Phylogeny
Cytosine
homologous (Evolution Evidence)
45. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.
stop codon
Vestigial structure
Fossils
Mold
46. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.
Selection
Dihybrid
Chiasma
Heterozygote
47. A geographic gradient in the extent to which a character is developed in a species
Clade
clinC
Speciation
genes
48. Change to a chromosome in which a fragment of the chromosome is removed
Deletion
analogous (Evolution Evidence)
Natural Selection
ribose - phosphate - and a base
49. A pairing where the parent plants differ in only one character.
Gametic
Gene
Monohybrid Cross
Gene Pool
50. Embryos of similar organisms have very similar early development indicating similar DNA at work
Comparative Embryology
Relative dating
Amber
Pre -zygotic Mechanisms