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Test your basic knowledge |
CSET Genetics And Evolution
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Subjects
:
cset
,
science
,
genetics
Instructions:
Answer 50 questions in 15 minutes.
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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. One of the identical rods of a chromosome.
Parallel Evolution
Balanced Polymorphism
Germ
Chromatid
2. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants
its negative charge
If you lose one then you will still have one to back you up.
Punctuated Equilibrium
Mesozoic era
3. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic
Founder effect
anticodon
geologic time scale
Paleozoic era
4. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell
Monohybrid Cross
amino acid
Germ
Homozygote
5. The gradual changes in gene frequencies in a population due to random events
Genetic Drift
Gamete Isolation
homologous (Evolution Evidence)
Sub - species
6. The study of the structures of different organisms - looking at homologous parts
Dihybrid
Genetic Drift
Comparative Anatomy
body fossils
7. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome
Translocation
Common Ancestor
Sympatric Speciation
Analogous Structures (analogies)
8. Embryos of similar organisms have very similar early development indicating similar DNA at work
Test Cross
Comparative Embryology
gel electrophoresis
Genetic Drift
9. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.
Dihybrid Cross
Adaptation
Dominant
thymine
10. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations
rRNA
Hybrid Breakdown
Phyletic Gradualism (anagenesis)
deoxyribonucleic acid
11. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances
Heterozygous
gel electrophoresis
Mutation
Ring Species
12. Closely related species occupying different habitats - niches preventing them from interbreeding
Ecological Barrier
Dominant
Meiosis
Test Cross
13. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.
Allele Frequency
Phylogeny
Fitness
Double Helix
14. A taxon originating from and including a single common ancestor
Homologous structures
Monophyletic
Adaptation
Niche
15. Any agent that can cause a change in DNA
Fossils
Mutagen
Diploid
Reproductive Isolation
16. What does DNA stand for...
deoxyribonucleic acid
Geographical Isolation
Cast
tRNA
17. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration
nucleotide
deoxyribonucleic acid
clinC
Gene Pool
18. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
Deme
Geographical Isolation
three
cytosine in DNA is about equal to the percentage of guanine molecules
19. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene
Nucleotide
Balanced Polymorphism
Genotype
Mechanical (morphological) Isolation
20. Dna moves during electrophoresis because of...
Ecological (habitat) Isolation
Allele Frequency
Recessive
its negative charge
21. Consists of all genes - including all the different alleles - that are present in a population
Gene pool
Dihybrid Cross
Substitution
Heterozygous
22. A geographic gradient in the extent to which a character is developed in a species
clinC
Species
Natural Selection
Chromosome mutation
23. During transcription an RNA molecule is formed
that is complementary to a single strand of DNA
Phylogeny
Mechanical (morphological) Isolation
amino acid
24. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)
Endemic
Genetic Equilibrium
Mendel's traits are now called _____ found on DNA
Meiosis
25. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
watson and crick
Disruptive Selection
Nucleotide
Adenine
26. A group of organisms of the same species occupying a given area.
Population
Mate Selection
Habitat
tRNA
27. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.
Amber
Locus
Character Displacement
Post -zygotic Mechanisms
28. Three mRNA nucleotides that code for a specific amino acid
Endemic
codon
Homologous structures
nucleotides
29. Is any chromosome that is not a sex chromosome.
Autosomes
mRNA
False RNA
ribose - phosphate - and a base
30. Organ that serves no useful function in an organism
Vestigial organs
Recessive
Allopatric Speciation
index fossil
31. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry
Hybrid Breakdown
codon
Analogous Structures (analogies)
Genetic Drift
32. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.
Sympatric Speciation
Mate Selection
Variation
Precambrian era
33. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.
If you lose one then you will still have one to back you up.
Phylogeny
Molecular biology
amino acids
34. Evolution resulting from small specific genetic changes that can lead to a new subspecies
Microevolution
Convergent Evolution
Founder effect
Cast
35. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance
clinC
Mesozoic era
transcription
Natural Selection
36. 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.
Geologic Evolution
Mesozoic era
mRNA
Gene
37. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.
Geographical Isolation
Ice
polypeptide
that is complementary to a single strand of DNA
38. Hybrid is sterile so biologically unfit
Phenotype
index fossil
Hybrid Infertility
Monophyletic
39. Periods of rapid evolution punctuated by periods of little change
Punctuated Equilibrium
Convergent Evolution
Extinction
mutation
40. Ribosomes are made of...
stop codon
Testcross
rRNA
Comparative Anatomy
41. Mating of 2 oism that differ in 2 characters
Dihybrid Cross
amino acid
Relative dating
Geographical Isolation
42. Change in a DNA sequence that affects genetic information
mRNA
Mutation
Adenine
Analogous Structures (analogies)
43. 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
thymine
Monohybrid Cross
Insertion
Species
44. Another name for a gene
Stabilising
chromatin
Allele
DNA
45. T or F A cloned organism has the same proteins as another organism
Adenine
Gametic
Mass Extinction
False genes
46. The environmental factors that favour certain phenotypes
Homozygous
Selection pressure
Monohybrid Cross
Speciation
47. A unique combination of traits that are passed down from one generation to another.
Convergent Evolution
Independent assortment
Heritable variation
Habitat
48. The region of the chromosome that holds the two sister chromatids together during mitosis
Chargaff
index fossil
Adaptive Radiation
Centromere
49. Mutation where an extra base is added
Insertion
DNA
Autosomes
False genes
50. Genes contain instructions for assembling
trace fossils
proteins
Endemic
Test Cross
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