The Basics “Zonkeys” are hybrid animals produced by mating zebras and donkeys. Zonkeys are not a true species because they have an odd number of chromosomes and cannot reproduce. While zonkeys are rare, they are bred in a number of zoos and specialized farms around the world. Zonkeys are also referred to as zebonkey, zebrinny, … Read more
Ovule Definition The ovule is part of the makeup of the female reproductive organ in seed plants. It’s the place where female reproductive cells are made and contained, and it is what eventually develops into a seed after fertilization, only for the seed to then ripen and produce a complete adult plant. Ovules are contained … Read more
Synapsis Definition Synapsis is an event that occurs during meiosis in which homologous chromosomes pair with their counterparts and remain bound due to the exchange of genetic information. During meiosis, homologous chromosomes are paired and then separated to reduce the genetic content of the resulting gamete cells. Synapsis does not occur during mitosis, because homologous … Read more
Tonicity Definition Tonicity refers to the concentration of a solution in comparison to another solution. Concentration refers to the amount of solutes dissolved by a solution. A hypertonic solution has a higher concentration of solutes (less water) than another. Hypotonic solutions have a lower concentration of solutes and more water than other solutions. The concentration … Read more
A haploid cell contains a single set of chromosomes (n), whereas a diploid cell contains two sets (2n). In humans and most other multicellular organisms, the majority of cells are diploid, and only the gametes (egg and sperm cells) are haploid. However, some organisms consist entirely of haploid cells, and may reproduce sexually or asexually. … Read more
Cells are the fundamental units of life from which all other living things are made. They contain all the molecules and structures needed for individual cell survival and the survival of the organism as a whole. Different cells have different subcellular structures, but all eukaryotes contain the same three parts: the nucleus, the cell membrane, … Read more
Getting high scores on the SAT is important. The higher your score, the better your chances of getting into more competitive colleges and qualifying for certain scholarship opportunities. The key to opening these doors is knowing how to improve SAT scores. Before taking the test the first time, you may have known the theory on … Read more
The goal for many high school students is to get accepted into college. They think about it all throughout their high school career and maybe even have their dream school already picked out. But what about your goals after you’ve reached that one? It’s important to think about short-term and long-term goals as a college … Read more
When looking at a college calendar, you likely will notice that they have Fall Semester and Spring Semester start and end dates. But what are the differences between these two periods of time, and how does it affect your college education? We’ll run through the differences between the fall and spring semesters so you can … Read more
In the United States, there are many colleges and universities, but how many are accredited? Even though a college may exist, it does not mean that it will be able to provide the best educational program or teaching system. In some cases, a college can be created and approved to teach, but it cannot be … Read more