Sentences with word «dimorphism»
Dimorphism refers to the existence of two distinct forms or shapes within a species. It typically refers to the presence of noticeable physical differences between males and females. Full definition
This aspect must be evaluated in association with the pronounced body - size variation within the sample, which implies marked differences between age ranges and a considerable degree of sexual dimorphism in Au.
elifesciences.org
This seal shows extreme sexual dimorphism in size, seemingly the largest of any mammal by mass, with the males typically five to six times heavier than the females.
Regardless, these footprints do expand the upper limit of size in (presumably) A. afarensis, and offer strong support for arguments favoring strong sexual size dimorphism in this extinct species.
These aspects were summarized in a recent review, also highlighting sex dimorphism in kidney disease (171).
group, females have a contrasting color dimorphism with one morph potentially mimicking males.
Our results are consistent with considerable body size variation and, probably, degree of sexual dimorphism within a single species of bipedal hominins as early as 3.66 million years ago.
This cross-sectional study was designed to evaluate the impact of sexual dimorphism on the trauma patterns and the clinical
Yassin will focus on two traits that have recurrently evolved in multiple Drosophila species: In D. erecta and more than 20 species of the montium group, females have a contrasting color dimorphism with one morph potentially mimicking males.
If the same holds true for other species, Hunt says, conservation biologists may want to take sexual dimorphism into account when assessing species» vulnerability to current environmental threats.
There seems to be some significant dimorphism between the sexes on fasting from what I've read.
That would put species with strong sexual dimorphism at greater risk of extinction.
High levels of dimorphism such as in gorillas may correlate with more «harem» - like social structures.
afarensis had substantial size dimorphism -LSB-...] leading to a large amount of variation in body size within this taxon.»
* The effects of host species and sexual dimorphism differ among root, leaf and flower microbiomes of wild strawberries in situ — Na Wei — Scientific Reports
Plavcan, J. M. & van Schaik, C. P. Intrasexual competition and body weight dimorphism in anthropoid primates.
My focal system is a genetically - based colony dimorphism exhibited by the red imported fire ant, Solenopsis invicta.
In the domain of endocrinology and metabolism, the greatest body of evidence for important clinical implications of sexual dimorphisms comes from studies in the field of type 2 diabetes mellitus (T2DM).
However, other studies did not specify any sexual dimorphisms after perinatal undernutrition.
As a ciliated protozoan, Tetrahymena thermophila exhibits nuclear dimorphism: two types of cell nuclei.
the importance of the paper is not as much in the finding of high dimorphism — this has been the conclusion of many studies for virtually all australopith species — but the inference of bimaturism and its implications for social structure.»
It has been recognized for some time by paleoanthropologists that sexual dimorphism characterized several species comprising the geographically diverse genera of Australopithecus and Paranthropus.
The research «provides a strong indication, and the first good documentation from the fossil record, that sexual dimorphism tends to increase extinction risk,» said Jonathan Payne, a geological sciences professor at Stanford University.
One suggests that dimorphism actually helps species adapt to their environment; thus, making them less likely to become extinct.
Current conversation on sex personals dimorphism and person development, organized by BU's Anthropology division and present Eileen Plavcan and Phil Sparks as speaker, was outstanding.
Body height preferences and actual dimorphism in stature between partners in two non-Western societies (Hadza and Tsimane»).
These results suggest a huge variety of genes showing sex dimorphism in hepatic genes, which might influence drug pharmacokinetics in a sex - specific way.
«What we might be observing is a gradual trend toward more sexual dimorphism within this species,» Swierk said.
However, most studies used animal models, and there is still a knowledge gap regarding sex dimorphism in human diabetic cardiomyopathy (311).
David Punzalan and David Hosken, researchers at the Center for Ecology and Conservation at the University of Exeter in the UK, have defined sexual dimorphism as the obvious differences in male and female physiology, behavior, and morphology.
Polish scientists have shown that male and female preferences for a height difference (known scientifically as sexual dimorphism) change based on how tall they are, perhaps so that people can widen their own dating pool.
The research into sexual dimorphism is by no means definitive yet and, overall, in terms of their brains, men and women are far more similar than different.
Studies have found some differences in the structure of and activity in the brain, a concept known as sexual dimorphism.
marriage is a public institution declaring the interdependence of men and women; formed around the natural realities of sexual dimorphism, of the procreative union between a man and woman, and of the bonds of blood; and providing a secure setting in which children's bonds with the parents that bore them are honoured [he's British] and upheld.
We can no longer depend on nods of agreement when we talk of «sexual dimorphism,» even after we explain what it means.
I agree with Douglas Farrow's first two theses — that homo sapiens is a sexually dimorphic species and so characterized more by differences between male and female than by variation — but with the qualification that these sound like empirical claims, and it is perfectly conceivable that advances in reproductive technology might make sexual dimorphism and difference irrelevant.
They also suggest that sexual dimorphism — the physical distinction between genders, with females typically smaller in mammals — was more prevalent in early hominin species but then steadily ironed out by evolution.
«Sexual dimorphism is very common, as is sex ratio variation.
Palkovacs noted that many studies have looked at the evolutionary biology of sexual dimorphism (differences between the sexes in traits such as body size or coloring) and variations in sex ratios (when populations deviate from a one - to - one ratio of males to females).
«Mosquitofish populations with more females have greater ecological impact: Scientists investigating ecological consequences of sexual dimorphism and sex ratio variation in mosquitofish populations found dramatic effects.»
Many present - day species offer showy examples of sexual dimorphism — characteristic differences between males and females that usually help males attract and secure mates.
But it's been difficult to determine how sexual dimorphism has impacted species survival because in most cases, scientists can't tell from a fossil whether an animal was male or female.
Furthermore, we showed that life - history traits related to reproduction of species with sexual size dimorphism and bi-parental care can vary exclusively with body condition of the sex contributing the most to reproduction.
Indeed, after measuring 180 chins from skeletal samples from around the world, Zaneta Thayer of Northwestern University and Seth Dobson of Dartmouth College established «sexual dimorphism» of chin shape.
So - called because of the round shape of their webs, these spiders display a significant degree of sexual dimorphism.
The leopard lacewing exhibits sexual dimorphism, which means that females aren't nearly as showy.
I nevertheless think there's a greater degree of sexual dimorphism than you would expect if humans were biologically adapted for a monogamous system.
It is estimated that H. ergaster stood at 1.9 m (6ft3) tall with relatively less sexual dimorphism in comparison to earlier hominins.