Definition: A process by which heritable traits conferring survival and reproductive advantage to individuals, or related individuals, tend to be passed on to succeeding generations and become more frequent in a population, whereas other less favourable traits tend to become eliminated; the differential survival and reproduction of phenotypes.

Alright class, settle down, let’s dive in today! We've got a really important word here: selection . Now, you might see it written out quite formally in your dictionary – and trust me, that’s a very detailed definition! Let’s break it down into something easier to understand. Think of it like this: imagine a forest filled with deer. Some deer are faster, some have thicker coats, some are better at spotting predators. These differences – these traits - make them more likely to survive and have babies that also share those helpful traits. That’s natural selection in action! It's the process where: “Heritable traits” – These are things passed down from parents to children, like eye color or how fast you can run. "Survival and reproductive advantage" - Traits that help an animal live longer and have more babies are favored! "Pass on to succeeding generations" – Those helpful traits get spread around. “More frequent in a population” – Over time, the group of deer will have more fast deer and thick-coated deer than slow or thin ones. And what about the less favorable traits? Well, if they don't help you survive and reproduce, they tend to disappear, like a fading rhyme! Essentially, selection is all about differentiation . It’s nature "choosing" which characteristics are best suited for an environment – it’s not deliberate , but it has a powerful effect over long periods of time. Does that make sense? Now, who can give me a simple example of natural selection they've heard about? Don’t be shy!

Definition: A process by which heritable traits conferring survival and reproductive advantage to individuals, or related individuals, tend to be passed on to succeeding generations and become more frequent in a population, whereas other less favourable traits tend to become eliminated; the differential survival and reproduction of phenotypes.

Alright class, settle down, let’s talk about “selections,” it's a really important word in biology! Now, that dictionary definition is quite long, but don't worry, we can break it down. Think of it like this: selection is the engine driving evolution. Let's unpack it piece by piece with a little rhyme to help you remember: “ Selection’s the force, a powerful plea, For traits that help creatures to be free. To thrive and breed, a fortunate sign, Those qualities flourish, truly divine! " Okay, let's look at what that means. The dictionary is saying essentially this: “Heritable Traits”: These are characteristics passed down from parents to children – things like fur color in animals, or eye shape in humans. They’re coded in our DNA! "Survival and Reproductive Advantage": Some of these traits make an animal better at living longer (survival) and having more babies (reproduction). Maybe a faster cheetah is better at catching prey, or a bird with brighter feathers attracts a mate. “Tended to be passed on…”: Because those helpful traits are advantageous, they get passed down – like good genes being shared! “…more frequent in a population”: Over time, as more individuals have these beneficial traits, the population starts to have more of them. It's getting more common! “Less favorable traits tend to become eliminated…”: On the flip side, if a trait makes it harder to survive or reproduce (like a weak spot in an insect’s armor), individuals with that trait are less likely to pass it on. Eventually, those traits disappear from the population. "Differential survival and reproduction of phenotypes": This is just fancy talk for saying that different versions (phenotypes) of a trait – meaning different appearances or characteristics – have different chances of surviving and reproducing. Think of it like this: Imagine a forest filled with rabbits. Some rabbits are naturally faster, some are fluffier, some have better camouflage. The ones who are fastest can escape predators more easily, the fluffy ones stay warmer in winter, and the camouflaged ones hide from danger. Because they survive and reproduce more , there will be more fast rabbits, more fluffy rabbits, and more camouflaged rabbits in the next generation! Do you have any questions about selection? Don't hesitate to ask – understanding this is key to unlocking how life changes over time!

Definition: The term "afrormosia" refers to the interaction between two or more genes that have co-expressed in a single locus. This interaction can result in complex phenotypes, where some alleles are expressed at higher frequencies than others. In humans, afrormosia is thought to occur due to the influence of genetic mutations on gene expression.

afrormosia

Definition: In genetics, agamogenetic refers to a type of chromosomal abnormality where genes are located in different locations on the chromosome, often resulting in different phenotypes.

agamogenetic

Definition: Heterozonias are species that differ in their genetic makeup due to mutations or differences in gene expression, leading to distinct phenotypes. These traits can be beneficial or detrimental depending on environmental conditions and ecological interactions within a species.

Heterozonias

Definition: In biology, an "unhomoologous" relationship refers to a situation where two organisms have different genetic makeup but share the same genome. This means that one organism has genes for traits that are not present in the other organism, resulting in differences between their phenotypes. Examples of such relationships include: 1.

Homospecies

: Two species with identical genetic material. 2.

Heterospecies

: Two or more species with different genotypes but sharing a common ancestor. 3.

unhomologous

Definition: Segregative is a term used in the context of genetics and genetic diseases. It refers to the process by which individuals with certain traits are more likely to pass on those traits to their offspring, resulting in an increase in the frequency of that trait within a population or species. In genetics, segregative traits refer to genes that have different expression levels or phenotypes depending on the sex of an individual. This means that if two individuals have the same genetic makeup but express one trait differently, they will

segregative

Definition: A polyhybrid is a hybrid species that combines traits from two or more distinct species. It is characterized by having multiple genetic variations, including mutations, which can result in different phenotypes and characteristics. For example, a "dwarf" plant (like a dwarf tomato) may have several traits that are not typically associated with being a "normal" human. This could include the presence of short or tall roots, shorter leaves, or even an unusual shape like a heart-shaped flower. Poly

polyhybrid

Definition: Pleiotropy is a phenomenon where a single gene can exhibit multiple traits or behaviors, resulting from the interaction of different genes. It occurs when a gene has more than two functional forms (i.e., multiple alleles) and these different forms are expressed in different tissues or organs, leading to complex phenotypes. Pleiotropism is a common genetic variation observed in many organisms, including humans, animals, plants, and bacteria.

pleiotropy

Definition: Phenotypically refers to the physical characteristics that distinguish individuals from one another. These characteristics are inherited and can be influenced by environmental factors, such as nutrition, genetics, or exposure to certain chemicals or environments. Phenotypes may include physical traits, such as height, weight, hair color, eye color, skin tone, etc., as well as mental traits, such as intelligence, personality traits, behavior, etc. The term "phenotypically" refers to the way in which an individual's

phenotypically