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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. Selection acting against the middle of a range of variation
Migration
Disruptive Selection
Guanine
Allele Frequency
2. Name for oism with one dominant and one recessive allele
Heterozygous
Gametic
Selection pressure
Vestigial structure
3. 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.
Cast
rRNA
Mass Extinction
Homologous pair
4. Visual expression of a trait
Phenotype
Deme
Centromere
Guanine
5. A trait that masks the expression of another trait
three
Punctuated Equilibrium
Autosomes
Dominant
6. When zygote does not complete development or is physically weaker than normal
Vestigial structure
Hybrid Inviability
Homozygote
Genetic Equilibrium
7. 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
Gene pool
amino acids
Deme
8. What is one benefit for having two strands of DNA?
If you lose one then you will still have one to back you up.
Punnett Square
tRNA
Reproductive Isolation
9. 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.
Double Helix
Cytosine
Selection pressure
Dominant
10. Transcrition occurs in the...
Sequential Evolution
Genetic Equilibrium
Amber
nucleus
11. Natural selection that causes the frequency of a particular allele to move in one direction
Selection pressure
Sedimentary Rock
Directional Selection
ribose - phosphate - and a base
12. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains
GATTACA
Double Helix
Geographical Isolation
Meiosis
13. The signal on a mRNA molecule that designates the end of the coding sequence is called the...
Precambrian era
Adaptive Radiation
chromatin
stop codon
14. Is any chromosome that is not a sex chromosome.
Autosomes
Analogous structures
Mutation
Balanced Polymorphism
15. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
Genome
Adenine
Allele Frequency
Semi - conservative replication
16. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.
cytosine in DNA is about equal to the percentage of guanine molecules
Sub - species
Fossils
Genotype
17. A geographic gradient in the extent to which a character is developed in a species
Species
clinC
Locus
False genes
18. Form of reproductive isolation in which two populations reproduce at different times
Homologous structures
Heterozygous
Homologous pair
Temporal Isolation
19. 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
Dihybrid
tRNA
Sexual Selection
Analogous Structures (analogies)
20. A body cell
Somatic
Duplication
Convergent Evolution
Adaptive Radiation
21. Synonym for protein; chain of amino acids
polypeptide
Environment
RNA polymerase
hydrogen bonds
22. Determined the concept of complementary base pairing
true
Chargaff
Test Cross
Mutagen
23. Hybrid is sterile so biologically unfit
Mitosis
Hybrid Infertility
Mold
transcription
24. Nucleotides that control which amino acids are added during protein synthesis
Codon
Hybrid Inviability
Sequential Evolution
Duplication
25. The independant evolution of similar traits - starting from a similar ancestral condition
Parallel Evolution
Mutagen
False genes
Homozygous
26. Pea plants
Test Cross
clinC
codon
Medel worked with _____
27. Evolution resulting from small specific genetic changes that can lead to a new subspecies
Directional Selection
Microevolution
ribose - phosphate - and a base
Sex Chromosomes
28. Closely related species occupying different habitats - niches preventing them from interbreeding
Ecological Barrier
Temporal Isolation
Comparative embryology
Monohybrid
29. Actual remains of an organism such as bones - teeth - shells - etc.
Adenine
body fossils
Homozygous
translation
30. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other
Natural Selection
Heritable variation
homologous (Evolution Evidence)
Coevolution
31. The study relating the evolution of new charateristics to changes in the genes controlling development
replication
Evo Devo
Recessive
Selection
32. What happens during the process of translation
transcription
Phylogeny
The cell uses information from mRNA to produce proteins
Allele
33. Change in a DNA sequence that affects genetic information
mRNA
Adaptation
Mutation
Genotype
34. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are
tRNA
Test Cross
Fitness
Selection pressure
35. 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
Mendel's traits are now called _____ found on DNA
Ecological (habitat) Isolation
Stasis
Bottleneck Effect
36. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees
Thymine
Substitution
Paleozoic era
Phyletic Gradualism (anagenesis)
37. T or F A cloned organism has the same proteins as another organism
Hybrid Inviability
Chromosome mutation
False genes
Phenotype
38. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures
Codon
Convergent Evolution
Igneous and metamorphic rock
Histone
39. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.
Mass Extinction
index fossil
Gene frequency
Monohybrid
40. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.
Gene Pool
embryological evidence
Dominant
transcription
41. Two alternative forms of a gene e.g Tall vs Short
Industrial Melanism
Alleles
codon
Homologous structures
42. 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
Meiosis
Homozygote
Isolating Mechanism
Heterozygous
43. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character
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44. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles
Population
Reproductive Isolation
Genotype
Dihybrid
45. Another name for a gene
anticodon
Mitosis
nucleotides
Allele
46. The gradual changes in gene frequencies in a population due to random events
Founder Effect
Genetic Drift
Stabilising
Mendel's Principle of Segregation
47. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.
Comparative embryology
index fossil
Ice
Cytosine
48. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species
chromatin
Hominid
Hybrid
Homozygote
49. Speciation which does not involve a period of geographical separation
Sympatric Speciation
nucleotides
codon
Semi - conservative replication
50. These prevent fertilization between species e.g. diff breeding season - mating behaviour
Genetic Drift
Cenozoic era
Pre -zygotic Mechanisms
Biogeography