Related Experiment Video

Updated: Feb 10, 2026

Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants
10:08

Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants

Published on: December 21, 2021

2.6K

Maternal Mortality in the Twenty-First Century

John A Ozimek1, Sarah J Kilpatrick1

  • 1Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Cedars-Sinai Medical Center, 8635 West 3rd Street, Suite 160-W, Los Angeles, CA 90048, USA.

Obstetrics and Gynecology Clinics of North America
|May 12, 2018
PubMed

Maternal mortality plagues much of the world. There were 303,000 maternal deaths in 2015 representing an overall global maternal mortality ratio of 216 maternal deaths per 100,000 live births. In the United States, the maternal mortality ratio had been decreasing until 1987, remained stable until 1999, and then began to increase. Racial disparities exist in the rates of maternal mortality in the United States with maternal death affecting a higher proportion of black women compared with white women. To reduce maternal mortality, national organizations in the United States have called for standardized review of cases of maternal morbidity and mortality.

Keywords:
Maternal mortalityMaternal mortality ratioPregnancy-related deathRacial disparitiesSevere maternal morbidity

More Related Videos

Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions07:03

Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions

Published on: November 6, 2016

11.0K
Generation of Maternal Mutants Using zpc:cas9 Knock-in Zebrafish09:17

Generation of Maternal Mutants Using zpc:cas9 Knock-in Zebrafish

Published on: July 22, 2025

854

Related Concept Videos

Crossing Over01:34

Crossing Over

Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
172.3K
Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
22.4K
Taxonomy01:31

Taxonomy

Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics. It uses a hierarchy of increasingly inclusive categories with Latin names. The smallest units of taxonomy, species and genus, are used to assign a formal, taxonomic name to each species in a system. This classification system, referred to as binomial nomenclature, was formalized by Carolus Linnaeus in the 18th century.
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
90.0K
Oogenesis02:07

Oogenesis

In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
70.0K
Global Climate Change01:50

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.0K
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
37.3K