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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. Is any chromosome that is not a sex chromosome.
nucleotide
Gene frequency
Autosomes
clinC
2. 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.
Medel worked with _____
vestigial (Evolution Evidence)
Phenotype
Absolute dating
3. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.
hydrogen bonds
Rosalind Franklin
embryological evidence
RNA polymerase
4. Copying the code from DNA onto mRNA
geologic time scale
transcription
Paleozoic era
cytosine in DNA is about equal to the percentage of guanine molecules
5. The study of the structures of different organisms - looking at homologous parts
Medel worked with _____
Hominid
Comparative Anatomy
molecular evidence
6. 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.
that is complementary to a single strand of DNA
Parallel Evolution
Double Helix
transcription
7. Change in a DNA sequence that affects genetic information
codon
Ecological Barrier
Mutation
Natural Selection
8. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y
Chromosome mutation
Heterozygous
Sex Chromosomes
Variation
9. Selection against one end of a range of variation - resulting in a progressive change in allele frequency
Selection
Fitness
Directional Selection
Heterozygote
10. Mutation where an extra base is added
codon
Pre -zygotic Mechanisms
thymine
Insertion
11. Transcrition occurs in the...
Histone
Chargaff
nucleus
Cast
12. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil
body fossils
Ring Species
Dihybrid Cross
Adenine
13. Selection for the ability to obtain a mate
nucleotide
DNA fingerprint
Divergent Evolution
Sexual Selection
14. Organ no longer serves a function
vestigial (Evolution Evidence)
Allopatric Speciation
Petrification
Allele Frequency
15. Features that are superficially similar but have different modes of development
Dihybrid Cross
Gene Flow
geologic time scale
Analogous Features
16. Independent segregation of genes during the formation of gametes
nucleotides
Independent assortment
body fossils
Stasis
17. Proteins are made of...
Coevolution
embryological evidence
amino acids
Comparative embryology
18. A limb with five digits (fingers)
Pentadactyl limb
Substitution
Sedimentary Rock
Vestigial structure
19. 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
Mendel's Principle of Segregation
Geographical Isolation
Meiosis
body fossils
20. Gene
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21. The adaptive increase in pigmentation as a result of human - induced pollutants
Homologous Structures
NIche Isolation
Industrial Melanism
Immigration
22. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants
Double Helix
Evolution
amino acid
Mesozoic era
23. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats
Homozygous
Monophyletic
geologic time scale
NIche Isolation
24. Is the evolutionary process whereby a population becomes better suited to its habitat
Adaptation
tRNA
Autosomes
Petrification
25. An episode of large - scale extinction affecting many different groups of organisms within a short period of time
Chargaff
Mass Extinction
3 nucleotides
Natural Selection
26. Impression made from a organism in soft material such as sand or mud.
true
Mold
3 nucleotides
Fossils
27. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
codon
tRNA
tRNA
Chromosomes
28. 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
amino acid
Mendel's Principle of Segregation
Histone
29. The gradual changes in gene frequencies in a population due to random events
Convergent Evolution
Pre -zygotic Mechanisms
Genetic Drift
Phenotype
30. The study of the past and present distribution of species.
Biogeography
index fossil
Recessive
Insertion
31. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid
Migration
amino acid
If you lose one then you will still have one to back you up.
Nucleotide
32. Determined the concept of complementary base pairing
Mutation
Hershey and Chase
False genes
Chargaff
33. Ribosomes are made of...
molecular evidence
Dihybrid
rRNA
Convergent Evolution
34. The specific location of a gene on a chromosome
Recessive
Locus
Fitness
Gamete Isolation
35. Evolution of living things - based on evidence from the past and present.
Temporal Isolation
Common Ancestor
Gene Pool
Organic Evolution
36. During transcription an RNA molecule is formed
Homozygous
Rosalind Franklin
Semi - conservative replication
that is complementary to a single strand of DNA
37. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic
Founder Effect
Macroevolution
Chromosomes
geologic time scale
38. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
index fossil
Hybrid Breakdown
deoxyribonucleic acid
ribose - phosphate - and a base
39. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.
Population
Allele Frequency
Phenotype
replication
40. A trait that masks the expression of another trait
Centromere
Mendel's traits are now called _____ found on DNA
Dominant
Chromosomes
41. What is one benefit for having two strands of DNA?
If you lose one then you will still have one to back you up.
Centromere
Geologic Evolution
Heritable variation
42. Situation in which allele frequencies remain constant
Genetic Equilibrium
Haploid/Monoploid
If you lose one then you will still have one to back you up.
Insertion
43. Identical alleles for a gene
Gene Pool
amino acids
DNA fingerprint
Homozygote
44. The complete genetic material contained in an individual
Directional Selection
Monohybrid Cross
Mechanical (morphological) Isolation
Genome
45. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.
Gametic
amino acid
Monohybrid
Comparative embryology
46. 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.
Gene Pool
Natural Selection
stop codon
Vestigial structure
47. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection
Hershey and Chase
molecular evidence
Phenotype
deoxyribonucleic acid
48. The preserved remains or traces of an organism that lived in the past
polypeptide
Fossil
Industrial Melanism
anticodon
49. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.
False genes
Heterozygous
Extinction
Species
50. Found only in that country
Petrification
Heritable variation
Speciation
Endemic