Answer:
Explanation:
Hardy Weinberg equation is presented below and describes that in a population the frequency of alleles ad genotypes will remain static or the same in the absence of evolutionary disturbances such as mutation, migration ( gene flow), natural selection and with the population large and random mating
p² +2pq + q²
where p represents the frequency of the dominant alleles
q represent the frequency of the recessive alleles
p² represent the frequency of the dominant homozygous genotype
q² represent the frequency of the recessive homozygous genotype
2pq represent the frequency of the heterozygous genotype
q² also represent the frequency of the recessive phenotype
(p² + 2pq) represent the frequency of the dominant phenotype
<u>Answer:</u>
Fossils are the sources to learn the changes on the earth and how much it changed in these years. Its provides us with information about the existence of plant and animals in the past.
Actually, the fossils we found till the date are the ancestors of the plants and animals that live today. Moreover, some fossils of animals are easily identifiable since they exist till the date.
But there are fossils of animals that exist no longer in the earth. By studying and analyzing the fossils, one can tell how life on the earth has changed.
Also, we can learn about the ancestors of the plants and animals and how their long life existed on earth.
In other words, one can learn where and how those organisms were lived. So that we can know about our ancient environments.
Dendrites are the branching extensions of soma of nurons
Answer:
<em>Answer = explanation.</em>
Explanation:
If we think deeply about the matter, animals are way more important than humans and our needs, since nature depends on the relationship animals have with each-other and not on anything humans do. Historically, we were part of nature, but that was when we were still hunting, gathering and reproducing, not making trillions of plastic bags every year.
Natural conditions should be preserved at all costs, in other words, it comes first, and our needs should come last, in a very environmentally conscious society, that is. If we continue putting ourselves and our needs first, future generations will have a really nasty world to live in. But, since humands have their needs, we should maintain them, as long as they're within the "things I need to survive, study and work" range of needs, otherwise, we will be talking about unnecessary stuff.
Hope it helped,
BiologiaMagister
Explanation:
A)Image A represents a peptide hormone that interacts with a receptor, and image B represents a steroid hormone that interacts with the cell’s DNA
The endocrine system involves chemical signalling via the secretion of molecules called hormones into extracellular fluid.
- Steroid hormones are lipophilic, and readily diffuse across cell membranes. They bind to receptors in the interior of the cell to form a complex which regulates gene expression.
- Peptide hormones however,are hydrophilic, and thus cannot readily diffuse across the membrane. They remain outside the cell, binding to receptors which then activate secondary messenger signalling and a subsequent cellular response.
Further Explanation:
Hormones bind to chemical receptors in order to cause specific changes in target cells, these lead to changes in the body's internal environment called homeostasis. It includes the thyroid, parathyroid, pituitary, pineal and adrenal glands along with other regions.
The bone, adipose tissue, heart, pancreas and liver are a few of the regions of the body which show endocrine function. The brain, or control center functions to receive and process the information from the receptor. Effectors receive the control center's command and elicits a response in the form of a feedback loop, that may oppose or enhance the stimulus.
Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.
Learn more about homeostasis at brainly.com/question/1601808
#LearnWithBrainly
