Studied by 3 people
Ways species evolve
Random mutations in DNA produce new gene alleles which can be advantageous, Natural selection favors organisms with advantageous traits, leading to their increased reproductive success, and the passing on of favorable alleles to the next generation.
Charles Darwin observed that selective breeding by humans can lead to significant changes in traits within a population, similar to how natural selection acts in the wild.
Speciation occurs when a population evolves to the point where it can no longer interbreed with its ancestors to produce fertile offspring, often due to isolation and environmental differences.
The Theory of Evolution proposes that species evolve over time through the process of natural selection, driven by heritable variation and differential reproductive success.
Fossils, selective breeding, disparities between isolated populations, similarities in anatomy among different species, and DNA comparisons.
Antibiotic resistance occurs when bacteria develop mutations that render them resistant to antibiotics, allowing them to survive and proliferate in the presence of antibiotic treatment.
While the Theory of Evolution is widely accepted in the scientific community, some individuals may reject it due to religious beliefs or lack of understanding of the evidence supporting it.
Asexual Reproduction is a procedure that yields genetically identical offspring, sometimes referred to as clones.
Only one parent is needed, has the ability to reproduce quickly, and requires less energy to complete.
There is no genetic variation among the offspring, extinction-prone, cannot adopt, and overpopulation.
Sexual Reproduction calls for two parents, two gametes, one from each parent, fuse together at their nuclei in order to create a zygote.
Great diversity, encourages survival, and organisms are able to adapt.
Two parents are needed and fewer offspring produced.
The classification system divides all living things into one of five kingdoms as its initial division: animals, plants, fungi, protists, and prokaryotes.
Phylum is a further subdivision within kingdoms, with examples including Chordata, Arthropods, and Annelids.
Class is an additional sub-division that separates a phylum into groups such as mammals, birds, amphibians, fish, and reptiles.
Orders come after class, further subdividing groups such as mammals into carnivores and primates.
Families comprise the division of orders, with examples like Canidae (dogs) and Felidae (cats).
Genus is the next level below family, with examples including Acinonyx (cheetah), Panthera (tigers and lions), Neofelis (clouded leopard), and Felis (domestic cats).
Species is the last level of classification, where the genus Panthera is split into species like Panthera leo (lion) and Panthera tigris (tiger).
Natural selection causes organisms in the same area to morph to resemble one another, leading to mistakes in classification. However, advancements in genome sequencing have helped identify genetic commonalities and evolutionary links between organisms.
The term biodiversity describes the variety and quantity of distinct species found in a given location, as well as the genetic diversity among these organisms.
Chemicals like those found in pesticides can lower biodiversity by eliminating pest species, which in turn reduces the number of species in an ecosystem.
Urbanization and industrialization raise pollution levels and cause habitat degradation, leading to the displacement of species unable to adapt.
Local and global efforts, such as national parks, nature reserves, and international agreements aim to conserve biodiversity.
Includes growing population, dietary changes, emerging pests and diseases, and environmental changes attributed to global warming.
Sustainable farming practices are essential for conserving biodiversity and ensuring food security. Sustainable methods include genetic modification, selective breeding, and optimized cultivation conditions.
Agricultural yields can be enhanced through sustainable practices such as genetic modification, selective breeding, and optimized cultivation conditions. These methods help maximize growth potential and resource utilization.
