What is homogenous? What does homogenous mean? The word homogenous has been derived from two Greek words that are “homo”, which means the same and “Genous”, which means kind. Therefore, the homogeneous meaning refers to those considered as all same, similar, or present in the same proportion. The offspring produced via asexual reproduction are homogenous as they are identical to each other, including their parents. But on the other side, there are also many populations that may look homogenous, but they are not such as sub-Saharan African populations. Scientists understand through research that populations that are too homogenous leads to diminished biodiversity, and because of that, the chances of their early extinction due to environmental changes are high.
In ecosystems, homogenous populations have less biodiversity and lower species richness. Species richness, the count, or total number, of unique species within a given biological community, ecosystem, biome, or other defined area. Genetic variation is fundamental to population fitness and adaptation to environmental change. Genetic diversity among and within populations of all humans is necessary for people to survive and thrive in a changing world. Over the past three years, commitments for conserving genetic diversity have become more ambitious and specific under the Convention on Biological Diversity’s (CBD) draft post-2020 global biodiversity framework (GBF).Genetic variation is also a component of the planetary boundaries that humanity must operate within for our own survival (Mace et al., 2014).
Overall, 37% of the descendants from exogamous couples in inner Asia are closely inbred. This suggests that in Inner Asia, geographical exogamy is neither efficient in increasing genetic diversity nor in avoiding inbreeding, which might be due to kinship.
Presently, half the countries worldwide exhibit a fertility rate below replacement level. Not including the effects of climate migration, most Asian and European countries are predicted to have an indigenous population decline of 50% by 2070, causing demographic changes with profound societal implications. Policies that optimize chances to have a child when desired increase fertility rates and are gaining interest as a family-building method. Increasingly, countries have implemented child-friendly policies (mainly financial incentives in addition to public funding of fertility treatment in a limited number of countries) to mitigate decreasing national populations.
However, the extent of public spending on child benefits varies greatly from country to country. To our knowledge, this International Federation of Fertility Societies (IFFS) consensus document represents the first attempt to describe major disparities in access to fertility care in the context of the global trend of decreasing growth in the world population.
A lack of genetic diversity has been implicated in phenotypic abnormalities like lack of melanin and inactive pineal glands that control melanocyte production, fertility issues (e.g., cryptorchidism, poor sperm quality), reduced neonatal survival, heart defects, and susceptibility to disease, and may undermine the ability to adapt to changing climate. The effects of inbreeding to maintain homogeneity traits that do not promote survival of the species in extreme temperature event habitats may be exacerbated by other issues such as environmental catastrophe, reaching thresholds past which extinction probability increases dramatically.
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