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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. 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.
Allele Frequency
Endemic
Vestigial structure
Haploid/Monoploid
2. 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.
Genome
False genes
Homologous pair
watson and crick
3. A distinct population of a species that varies from other populations of the same species.
Homozygote
Sub - species
Population
Mechanical (morphological) Isolation
4. During transcription an RNA molecule is formed
DNA fingerprint
geologic time scale
that is complementary to a single strand of DNA
Industrial Melanism
5. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful
Post -zygotic Mechanisms
Evo Devo
Sedimentary Rock
Sex Chromosomes
6. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.
Analogous structures
Test Cross
Recessive
Niche
7. Name for oism with one dominant and one recessive allele
Heterozygous
Mitosis
Guanine
Genetic Equilibrium
8. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual
Testcross
Chromosomes
Convergent Evolution
Genotype
9. The signal on a mRNA molecule that designates the end of the coding sequence is called the...
index fossil
molecular evidence
False genes
stop codon
10. T or F If a nucleic acid contain uracil it is DNA
False RNA
mutation
Adenine
Locus
11. These prevent fertilization between species e.g. diff breeding season - mating behaviour
Common Ancestor
Pre -zygotic Mechanisms
Phenotype
Adaptation
12. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
Heterozygous
Disruptive Selection
Mendel's Principle of Segregation
Adenine
13. The region of the chromosome that holds the two sister chromatids together during mitosis
chromatin
Ecological (habitat) Isolation
Centromere
Migration
14. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value
Endemic
Gene
watson and crick
Stabilising selection
15. Selection against one end of a range of variation - resulting in a progressive change in allele frequency
Microevolution
Mendel's traits are now called _____ found on DNA
Clade
Directional Selection
16. A taxon originating from and including a single common ancestor
Monophyletic
Haploid/Monoploid
Migration
Analogous Features
17. Copying the code from DNA onto mRNA
transcription
Mesozoic era
Balanced Polymorphism
Homozygous
18. The evolutionary history/geneology of a group of organisms (a tree thingy)
Cenozoic era
Phylogeny
mutation
Reproductive Isolation
19. Movement of alleles into or out of a population due to the migration of individuals to or from the population
watson and crick
Ecological (habitat) Isolation
Gene flow
deoxyribonucleic acid
20. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells
Histone
Natural Selection
Gene Pool
If you lose one then you will still have one to back you up.
21. Ribosomes are made of...
rRNA
Bottleneck Effect
Mendel's Principle of Segregation
codon
22. Which type of Rna functions as a blue print of the genetic code
Population
Mendel's Principle of Segregation
mRNA
tRNA
23. Large - scale evolutionary changes that take place over long periods of time
Comparative Embryology
Macroevolution
Allele
Monohybrid Cross
24. When zygote does not complete development or is physically weaker than normal
Hybrid Inviability
Gene Flow
mRNA
Cast
25. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
codon
Coevolution
Allele
Geographical Isolation
26. A nucleotide of RNA is made of...
Heritable variation
Punnett Square
ribose - phosphate - and a base
Genetic Drift
27. The complete genetic material contained in an individual
tRNA
Common Ancestor
Population
Genome
28. Process in which DNA is duplicated
Allele Frequency
Mutation
replication
deoxyribose and phosphate
29. Form of reproductive isolation in which two populations reproduce at different times
Temporal Isolation
Fossil
proteins
Gene
30. A body cell
Mendel's traits are now called _____ found on DNA
Somatic
Genotype
Gene mutation
31. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Directional Selection
Dominant
Convergent Evolution
Extinction
32. The backbone of DNA consist of...
Cast
deoxyribose and phosphate
tRNA
Gene flow
33. 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
Ecological (habitat) Isolation
Speciation
Homozygote
34. Transcrition occurs in the...
watson and crick
Post -zygotic Mechanisms
nucleus
three
35. Is active during transcription
Speciation
Recombination
RNA polymerase
nucleotide
36. A geographic gradient in the extent to which a character is developed in a species
polypeptide
clinC
Cast
Amber
37. A population partially isolated from other populations of the same species
Deme
Stabilising selection
Thymine
stop codon
38. A unique combination of traits that are passed down from one generation to another.
Phenotype
Genotype
Heritable variation
Sexual Selection
39. Inherited feature that tends to prevent species from interbreeding with other species
Isolating Mechanism
Character Displacement
Bottleneck Effect
Punctuated Equilibrium
40. Disappearance of a species from all parts of its geographical range
Extinction
clinC
Gene
3 nucleotides
41. 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.
body fossils
Absolute dating
Double Helix
trace fossils
42. Human - like species that existed millions of years ago as witnessed through fossil evidence.
geologic time scale
Hominid
Gene Pool
stop codon
43. Selection for the ability to obtain a mate
Chromosomes
Sexual Selection
Directional Selection
Coevolution
44. An ancestor that two or more descendants have in common
Common Ancestor
Centromere
Gene Pool
Mass Extinction
45. The sum total of an organism's requirements; its way of life
Gene pool
Molecular biology
genes
Niche
46. How often a form of a gene appears in a gene pool
Nucleotide
Allele Frequency
DNA fingerprint
Adaptation
47. Mating of 2 oism that differ in 2 characters
Dihybrid Cross
Genetic Equilibrium
chromatin
Pre -zygotic Mechanisms
48. When competition causes two closely related species to become more different in regions where their ranges overlap
Comparative Embryology
Geologic Evolution
Character Displacement
Nucleotide
49. An evolutionary 'branch' and its daughter 'twigs'
Clade
deoxyribonucleic acid
Mate Selection
trace fossils
50. 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.
Chromosome mutation
body fossils
Hominid
Mitosis