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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Genetics 51 3850 3634 1663 1563 96 12708

Donald A. Morrison publications per year

The chart shows the history of publications by Donald A. Morrison between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Donald A. Morrison published across 56 years, from 1970 to 2025, averaging 2.1 papers a year. Output peaked at 8 publications in 2019. 3 of the 119 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 8. Peak 8 publications in 2019. 1970: 2 publications 1971: 2 publications 1972: 3 publications 1973: 3 publications 1974: 0 publications 1975: 1 publication 1976: 0 publications 1977: 2 publications 1978: 1 publication 1979: 3 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 1 publication 1984: 1 publication 1985: 0 publications 1986: 2 publications 1987: 4 publications 1988: 4 publications 1989: 1 publication 1990: 4 publications 1991: 1 publication 1992: 2 publications 1993: 2 publications 1994: 0 publications 1995: 4 publications 1996: 7 publications 1997: 2 publications 1998: 3 publications 1999: 2 publications 2000: 2 publications 2001: 3 publications 2002: 2 publications 2003: 3 publications 2004: 2 publications 2005: 1 publication 2006: 1 publication 2007: 2 publications 2008: 1 publication 2009: 4 publications 2010: 1 publication 2011: 0 publications 2012: 3 publications 2013: 5 publications 2014: 2 publications 2015: 1 publication 2016: 5 publications 2017: 4 publications 2018: 4 publications 2019: 8 publications 2020: 1 publication 2021: 2 publications 2022: 1 publication 2023: 1 publication 2024: 2 publications 2025: 1 publication
1970 2025

119 publications in total across all disciplines

View publications per year as a table
Donald A. Morrison: publications per year, 1970 to 2025
Year Publications
1970 2
1971 2
1972 3
1973 3
1974 0
1975 1
1976 0
1977 2
1978 1
1979 3
1980 0
1981 0
1982 0
1983 1
1984 1
1985 0
1986 2
1987 4
1988 4
1989 1
1990 4
1991 1
1992 2
1993 2
1994 0
1995 4
1996 7
1997 2
1998 3
1999 2
2000 2
2001 3
2002 2
2003 3
2004 2
2005 1
2006 1
2007 2
2008 1
2009 4
2010 1
2011 0
2012 3
2013 5
2014 2
2015 1
2016 5
2017 4
2018 4
2019 8
2020 1
2021 2
2022 1
2023 1
2024 2
2025 1
Total 119
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Donald A. Morrison publication distribution in Genetics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Genetics in 2026. The highlighted bar marks where Donald A. Morrison sits on this spectrum.

No. of scientists
50 100 150 200
Bar chart with 67 bars. Horizontal axis: publications, 45–54 to 703+. Vertical axis: number of scientists, 0 to 217. Most scientists, 217, have 125–134 publications. The last bar groups every scientist with 703 publications or more. The highlighted bar, 95–104 publications, is where this scientist sits. 45–54 publications: 6 scientists 55–64 publications: 10 scientists 65–74 publications: 35 scientists 75–84 publications: 84 scientists 85–94 publications: 102 scientists 95–104 publications: 151 scientists 105–114 publications: 175 scientists 115–124 publications: 203 scientists 125–134 publications: 217 scientists 135–144 publications: 205 scientists 145–154 publications: 193 scientists 155–164 publications: 188 scientists 165–174 publications: 170 scientists 175–184 publications: 178 scientists 185–194 publications: 164 scientists 195–204 publications: 173 scientists 205–214 publications: 159 scientists 215–224 publications: 134 scientists 225–234 publications: 143 scientists 235–244 publications: 105 scientists 245–254 publications: 114 scientists 255–264 publications: 92 scientists 265–274 publications: 88 scientists 275–284 publications: 87 scientists 285–294 publications: 80 scientists 295–304 publications: 62 scientists 305–314 publications: 75 scientists 315–324 publications: 67 scientists 325–334 publications: 60 scientists 335–344 publications: 52 scientists 345–354 publications: 40 scientists 355–364 publications: 48 scientists 365–374 publications: 47 scientists 375–384 publications: 46 scientists 385–394 publications: 31 scientists 395–404 publications: 27 scientists 405–414 publications: 40 scientists 415–424 publications: 30 scientists 425–434 publications: 43 scientists 435–444 publications: 29 scientists 445–454 publications: 14 scientists 455–464 publications: 28 scientists 465–474 publications: 21 scientists 475–484 publications: 21 scientists 485–494 publications: 22 scientists 495–504 publications: 17 scientists 505–514 publications: 12 scientists 515–524 publications: 11 scientists 525–534 publications: 8 scientists 535–544 publications: 8 scientists 545–554 publications: 14 scientists 555–564 publications: 4 scientists 565–574 publications: 11 scientists 575–584 publications: 5 scientists 585–594 publications: 11 scientists 595–604 publications: 12 scientists 605–614 publications: 7 scientists 615–624 publications: 6 scientists 625–634 publications: 10 scientists 635–644 publications: 9 scientists 645–654 publications: 10 scientists 655–664 publications: 6 scientists 665–674 publications: 6 scientists 675–684 publications: 6 scientists 685–694 publications: 4 scientists 695–702 publications: 6 scientists 703+ publications: 100 scientists
45–54 publications 703+

This scientist: 96 publications — 6th percentile

6% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 703 publications or more.

View publications distribution as a table
Number of Genetics scientists by publication count, Research.com 2026 ranking edition. Based on 4,342 ranked scientists.
Publications Scientists This scientist
45–54 6
55–64 10
65–74 35
75–84 84
85–94 102
95–104 151 96
105–114 175
115–124 203
125–134 217
135–144 205
145–154 193
155–164 188
165–174 170
175–184 178
185–194 164
195–204 173
205–214 159
215–224 134
225–234 143
235–244 105
245–254 114
255–264 92
265–274 88
275–284 87
285–294 80
295–304 62
305–314 75
315–324 67
325–334 60
335–344 52
345–354 40
355–364 48
365–374 47
375–384 46
385–394 31
395–404 27
405–414 40
415–424 30
425–434 43
435–444 29
445–454 14
455–464 28
465–474 21
475–484 21
485–494 22
495–504 17
505–514 12
515–524 11
525–534 8
535–544 8
545–554 14
555–564 4
565–574 11
575–584 5
585–594 11
595–604 12
605–614 7
615–624 6
625–634 10
635–644 9
645–654 10
655–664 6
665–674 6
675–684 6
685–694 4
695–702 6
703+ 100
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Donald A. Morrison D-index placement in Genetics in 2026

The chart shows the D-index (discipline H-index) distribution of Genetics scientists ranked by Research.com in 2026. The highlighted bar marks where Donald A. Morrison sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 160+. Vertical axis: number of scientists, 0 to 191. Most scientists, 191, have 62–63 D-Index. The last bar groups every scientist with 160 D-Index or more. The highlighted bar, 50–51 D-Index, is where this scientist sits. 40–41 D-Index: 24 scientists 42–43 D-Index: 52 scientists 44–45 D-Index: 84 scientists 46–47 D-Index: 112 scientists 48–49 D-Index: 118 scientists 50–51 D-Index: 141 scientists 52–53 D-Index: 143 scientists 54–55 D-Index: 145 scientists 56–57 D-Index: 179 scientists 58–59 D-Index: 162 scientists 60–61 D-Index: 175 scientists 62–63 D-Index: 191 scientists 64–65 D-Index: 172 scientists 66–67 D-Index: 184 scientists 68–69 D-Index: 164 scientists 70–71 D-Index: 158 scientists 72–73 D-Index: 150 scientists 74–75 D-Index: 136 scientists 76–77 D-Index: 127 scientists 78–79 D-Index: 127 scientists 80–81 D-Index: 111 scientists 82–83 D-Index: 110 scientists 84–85 D-Index: 110 scientists 86–87 D-Index: 84 scientists 88–89 D-Index: 102 scientists 90–91 D-Index: 66 scientists 92–93 D-Index: 72 scientists 94–95 D-Index: 70 scientists 96–97 D-Index: 54 scientists 98–99 D-Index: 60 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 55 scientists 104–105 D-Index: 45 scientists 106–107 D-Index: 42 scientists 108–109 D-Index: 28 scientists 110–111 D-Index: 39 scientists 112–113 D-Index: 25 scientists 114–115 D-Index: 31 scientists 116–117 D-Index: 29 scientists 118–119 D-Index: 34 scientists 120–121 D-Index: 29 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 18 scientists 126–127 D-Index: 27 scientists 128–129 D-Index: 22 scientists 130–131 D-Index: 16 scientists 132–133 D-Index: 11 scientists 134–135 D-Index: 17 scientists 136–137 D-Index: 12 scientists 138–139 D-Index: 21 scientists 140–141 D-Index: 4 scientists 142–143 D-Index: 9 scientists 144–145 D-Index: 14 scientists 146–147 D-Index: 6 scientists 148–149 D-Index: 10 scientists 150–151 D-Index: 7 scientists 152–153 D-Index: 9 scientists 154–155 D-Index: 8 scientists 156–157 D-Index: 8 scientists 158–159 D-Index: 9 scientists 160+ D-Index: 96 scientists
40–41 D-Index 160+

This scientist: 51 D-Index — 12th percentile

12% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 160 D-Index or more.

View D-Index distribution as a table
Number of Genetics scientists by D-index, Research.com 2026 ranking edition. Based on 4,342 ranked scientists.
D-Index Scientists This scientist
40–41 24
42–43 52
44–45 84
46–47 112
48–49 118
50–51 141 51
52–53 143
54–55 145
56–57 179
58–59 162
60–61 175
62–63 191
64–65 172
66–67 184
68–69 164
70–71 158
72–73 150
74–75 136
76–77 127
78–79 127
80–81 111
82–83 110
84–85 110
86–87 84
88–89 102
90–91 66
92–93 72
94–95 70
96–97 54
98–99 60
100–101 49
102–103 55
104–105 45
106–107 42
108–109 28
110–111 39
112–113 25
114–115 31
116–117 29
118–119 34
120–121 29
122–123 29
124–125 18
126–127 27
128–129 22
130–131 16
132–133 11
134–135 17
136–137 12
138–139 21
140–141 4
142–143 9
144–145 14
146–147 6
148–149 10
150–151 7
152–153 9
154–155 8
156–157 8
158–159 9
160+ 96
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Overview

Donald A. Morrison is affiliated with the University of Illinois at Chicago in the United States. Their research primarily spans fields related to Biochemistry, Genetics and Molecular Biology, with a total of 11 publications. Additionally, their work touches on Medicine through 7 published papers.

Their subfields of study focus on Molecular Biology, Epidemiology, Molecular Medicine, Microbiology, and Infectious Diseases. The breadth of their research is reflected in diverse main topics including Pneumonia and Respiratory Infections, Antibiotic Resistance in Bacteria, RNA and protein synthesis mechanisms, Bacterial Infections and Vaccines, Antimicrobial Resistance in Staphylococcus, Pharmaceutical and Antibiotic Environmental Impacts, and Antibiotics Pharmacokinetics and Efficacy.

Morrison has authored several recent papers, which include:

  • A global multinational survey of cefotaxime-resistant coliforms in urban wastewater treatment plants, 2020, Environment International
  • Competence pili in Streptococcus pneumoniae are highly dynamic structures that retract to promote DNA uptake, 2021, Molecular Microbiology
  • Identification and Characterization of Negative Regulators of Rgg1518 Quorum Sensing in Streptococcus pneumoniae, 2023, Journal of Bacteriology
  • Type IV competence pili in Streptococcus pneumoniae are highly dynamic structures that retract to promote DNA uptake, 2021, bioRxiv (Cold Spring Harbor Laboratory)
  • Markerless Genome Editing in Competent Streptococci, 2022, Methods in molecular biology

Frequent co-authors collaborating with Morrison include Trinh Lam, Courtney K. Ellison, David Eddington, Ankur B. Dalia, and R Marano. Their publications are commonly found in venues such as bioRxiv (Cold Spring Harbor Laboratory), Environment International, Molecular Microbiology, Journal of Bacteriology, and Methods in molecular biology.

Best Publications

  • Complete Genome Sequence of a Virulent Isolate of Streptococcus pneumoniae

    H. Tettelin;K. E. Nelson;I. T. Paulsen;Jonathan A Eisen

  • An unmodified heptadecapeptide pheromone induces competence for genetic transformation in Streptococcus pneumoniae

    Leiv Sigve Havarstein;Gowri Coomaraswamy;Donald A. Morrison

  • A highly conserved repeated DNA element located in the chromosome of Streptococcus pneumoniae.

    Bernard Martin;Odile Humbert;Miguel Camara;Eric Guenzi

  • An rpsL Cassette, Janus, for Gene Replacement through Negative Selection in Streptococcus pneumoniae

    C. K. Sung;H. Li;J. P. Claverys;D. A. Morrison

  • Regulation of competence for genetic transformation in Streptococcus pneumoniae by an auto-induced peptide pheromone and a two-component regulatory system.

    E. V. Pestova;L. S. Håvarstein;D. A. Morrison

  • Identification of competence pheromone responsive genes in Streptococcus pneumoniae by use of DNA microarrays

    Scott N. Peterson;Chang Kyoo Sung;Robin Cline;Bhushan V. Desai

  • Identification of a new regulator in Streptococcus pneumoniae linking quorum sensing to competence for genetic transformation.

    Myeong S. Lee;Donald A. Morrison

  • PCR ligation mutagenesis in transformable streptococci: application and efficiency

    Peter C.Y Lau;Chang Kyoo Sung;Janet H Lee;Donald A Morrison

  • IDENTIFICATION OF THE STREPTOCOCCAL COMPETENCE-PHEROMONE RECEPTOR

    Leiv Sigve Håvarstein;Peter Gaustad;Ingolf F. Nes;Donald A. Morrison

  • A functional genomic analysis of type 3 Streptococcus pneumoniae virulence.

    Gee W. Lau;Sauli Haataja;Michael Lonetto;Sarah E. Kensit

  • Competence for genetic transformation in encapsulated strains of Streptococcus pneumoniae: two allelic variants of the peptide pheromone.

    Gianni Pozzi;L. Masala;Francesco Iannelli;R. Manganelli

  • A novel double-tryptophan peptide pheromone controls competence in Streptococcus spp. via an Rgg regulator

    Lauren Mashburn-Warren;Donald A. Morrison;Michael J. Federle

  • Transformation in Escherichia coli: cryogenic preservation of competent cells.

    D A Morrison

  • Genetic transformation in Streptococcus pneumoniae: nucleotide sequence analysis shows comA, a gene required for competence induction, to be a member of the bacterial ATP-dependent transport protein family.

    F M Hui;D A Morrison

  • Construction and evaluation of new drug-resistance cassettes for gene disruption mutagenesis in Streptococcus pneumoniae, using an ami test platform

    Jean Pierre Claverys;Agnes Dintilhac;Ekaterina V. Pestova;Bernard Martin

  • Gene Expression Analysis of the Streptococcus pneumoniae Competence Regulons by Use of DNA Microarrays

    Scott Peterson;Robin T. Cline;Hervé Tettelin;Vasily Sharov

  • Isolation of transformation-deficient Streptococcus pneumoniae mutants defective in control of competence, using insertion-duplication mutagenesis with the erythromycin resistance determinant of pAM beta 1.

    D. A. Morrison;M.-C. Trombe;M. K. Hayden;G. A. Waszak

  • Competence for genetic transformation in Streptococcus pneumoniae: organization of a regulatory locus with homology to two lactococcin A secretion genes

    Francis M. Hui;Lixin Zhou;Donald A. Morrison

  • Transient Association of an Alternative Sigma Factor, ComX, with RNA Polymerase during the Period of Competence for Genetic Transformation in Streptococcus pneumoniae

    Ping Luo;Donald A. Morrison

  • Construction and properties of a new insertion vector, pJDC9, that is protected by transcriptional terminators and useful for cloning of DNA from Streptococcus pneumoniae.

    Jau Der Chen;Donald A. Morrison

Frequent Co-Authors

Ronald J. Ellis
Ronald J. Ellis University of California, San Diego
Michael Tal
Michael Tal Hebrew University of Jerusalem
Ron Dagan
Ron Dagan Ben-Gurion University of the Negev
Leiv Sigve Håvarstein
Leiv Sigve Håvarstein Norwegian University of Life Sciences
Angel Porgador
Angel Porgador Ben-Gurion University of the Negev
David S. McKay
David S. McKay Johnson Space Center
Yves V. Brun
Yves V. Brun University of Montreal
Malcolm E. Winkler
Malcolm E. Winkler Indiana University
Timothy J. Mitchell
Timothy J. Mitchell University of Birmingham
Hervé Tettelin
Hervé Tettelin University of Maryland, Baltimore

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