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There is a mutation where some organisms are slightly different and better traits are selected. However I cannot imagine how an organism will mutate to have lets say lungs at once and unless organis
You set up the following trihybrid F1 cross: AaBbCc x AaBbCc. Traits A and B demonstrate complete dominance, but trait C demonstrates incomplete dominance.
Pseudoephedrine increases the amount of endogenous norepinephrine, whereas phenylephrine works on ?1-adrenergic receptors directly.There are numerous cases where experts have spoken out about the e
In a testcross of Aa Bb CC Dd Ee, where the genes show independent assortment, what is the expected frequency of aa bb Cc dd ee progeny
I have recently been doing a lot of research into the interplay between the innate and adaptive immune systems in humans, and mammalian laboratory models. This has led to my reading some interesting
I am somewhat new to evolutionary biology, having studied it on my free time as a computer science student. There is one particular thing that has always bothered me for which I have not seen a good
I find it interesting that all life on earth use DNA. I've seen video on how helicase and ribosomes work together to copy DNA sequences (to RNA) with helicase then recreate them using ribosomes.
Why are insects so energy-efficient while flying? Is it because of their light weight and aerodynamics or due to very efficient biochemical transformations (food->energy)
I can imagine that the mechanism is different for each, but why does brain tissue and red blood cells use specifically and only glucose for energy metabolism
There is apparently a whole bunch of modifications that can be found in prokaryotic and eukaryotic genomes, but I would like to know which ones have been found relevant in vertebrate/mammalian genom
I would like to compare the proliferation limit of Embryonic Stem cells (ES) and fibroblasts (which would be trans-differentiated) and describe how this difference plays a role when thinking about e
Hard water is water with high mineral/salt content. I'm told that a potted plant watered with a salt solution dries out sooner or later
A reflex is an unconscious action in response to some specific stimulus, e.g., blinking an eye, or pulling the hand away from a hot pinI know from school biology, and reading online that withdrawal
I've read a little about hybrid animals, and have been amazed by the fact that the gender of the parent species determines the species of the offspring, in some hybrids. A male horse and a female do
I understand that a behavioral tendency for stress acquired through evolutionary time can be transmitted from parent to child, but I'm wondering whether a trait not present before can be transmitted
I have been wondering for some time whether several drugs really have an expiration date.Let's narrow the scope and think about only "common" drugs, e.g. NSAIDs, antibiotics etc.
Since the new queens-to-be have wings, it means that ants either evolved from insects that can fly, or insects that can fly evolved fromants, or that we have a case of parallel evolution (which is u
A squirrel injected with the body fluids of a hibernating fellow is more prone to hibernation. If hibernation/aestivation are driven by biochemical's and not merely the weather, can the process be i
Does a female animal that lays eggs experience a pregnancy-like period of time, where she will feel and behave differently as if she were fertilized and her body is prepared to lay a fertile egg, no
Question: What's the effect of oxygen deficit on plants? ; And wondered whether the opposite would have any effect on a plant.That is to say, if a potted plant were placed under a bell-jar and the ai
One argument often given in favor of saving current and planting additional plants/saplings is the roots hold soil together and prevent soil erosion.
I'm interested in learning more about the biological systems or hormones or parts of the brain that affect short term (<15 minutes) ability to concentrate attention on the task and be aware of th
I've heard time and again that living in São Paulo (a large city in Brazil) takes 1.5 years from your life expectancy. The allegation is that this happens because of air pollution.
Say a sophiscated scientist in the 19th century noted that applying soy sauce on a dead octopus leads to movement of the legs, as a result of the voltage differences resulting from the salt in the s
I'm reading about how synaptobrevin is used to identify synaptic vesicles for tethering near the synaptic cleft. Since neurons have a synapse and dendrites, I'd like to know how exactly the vesicles