1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Soloha48 [4]
3 years ago
8

Why can’t the evolutionary relationships between certain species be explained thoroughly?

Biology
1 answer:
vredina [299]3 years ago
3 0

Answer:

Phylogeny: It is related to evolution dealings in the evolutionary development of a species. It is represented by different ways vertical or slanted.  

Phylogenesis: It refers to the evolutionary relationships among species.  

Phylogenetics: It is determination or estimation of evolutionary relationships among groups of species, organisms and genes.  

Phylogenetics is a field of biology which is used to find relationships among different organisms. This relationship is showing through a tree (used to model actual evolutionary relationship of organisms). Ancestral divided into two descendant species because closely related organisms are shown in near branches. If there is too much divergence between two species its mean they are not closely related.  

The history of speciation (one species becomes divided into more than one new species) tells us how these species are related to each other. If they evolve to be separate species relatively recently then they are "closely relative" similarly if they evolve to be separate specie long above then they are "distant relatives". For example orthologs are genes in different species that evolved from common ancestor gene by speciation; they retain same function in the course of evolution.

Explanation:

Si.

You might be interested in
______are often preserved as fossils because they secrete lime.
Finger [1]
I think it’s echinordms or mullusks
4 0
3 years ago
Read 2 more answers
Which of the following is NOT a good way to manage a natural resource?
Lena [83]

Answer:

Taking long showers

Explanation:

It wastes more water than necessary

7 0
3 years ago
Read 2 more answers
Your friend andre comes to school and tells you that he has a dislocated shoulder. based on what you now know about joints, what
VikaD [51]
This means that the ball part of Andres joint has fallen out of the socket part of his shoulder joint.
8 0
3 years ago
The cholera toxin, an AB exotoxin, attaches an ADP-ribose group to the host's stimulatory G factor (Gs). The normal function of
SCORPION-xisa [38]
<h2>b) option is correct </h2>

Explanation:

  • Some bacterial toxins cause disease by  altering the activity of G protein, cholera toxin is one of them
  • Cholera toxin catalyse ADP ribosylation of Gs and blocks GTPase activity thus Gs GTP become permanently active
  • Constitutive activation of Gs protein continuously induce adenylyl cyclase, cytosolic cAMP level rises that leads to activation of protein kinase A (pKA)
  • Activated pKA catalyse phosphorylation of two transmembrane proteins of intestinal epithelial cells:
  • CFTR cause excessive outflow of Cl- ion and Na+ H+ exchange cause efflux of Na+ ion, both enters in gut and form Na+ Cl-
  • Na+Cl- leads to outflow of water from the gut, resulting in diarrhea and dehydration and this condition may cause death of organisms due to loss of water and ions  
6 0
3 years ago
In which scenario could natural selection most obviously occur?
3241004551 [841]
<span>Natural selection is likely when there are stronger selection pressures. For example, a perpetual selection pressure is the fact that organisms have to compete for food and resources, meaning the best adapted ones survive. However, a stronger selection pressure may cause natural selection to occur more obviously. An example of this is when the number of white peppered moths decreased during industrialization in England due to the soot collecting on the trees. The change in population was very fast and obvious.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Why do most organisms that die not leave a record of their existence
    5·1 answer
  • Specialized cells protect the human body from disease-causing microbes by
    11·1 answer
  • Which of the following represents a sensory input that is not part of both the somatic and autonomic systems?(A) Vision(B) taste
    7·1 answer
  • Which is a basic unit of a sugar molecule
    7·2 answers
  • How do small food molecules such as glucose get from ur gut to the cells ​
    6·1 answer
  • What doesn’t change when the earth’s surface slowly moves
    15·1 answer
  • ILL GIVE BRANILIST PLEASE HELP
    7·1 answer
  • Which is the most exact method of determining the age of geologic features?
    6·1 answer
  • You want to determine whether short wings in fruit flies are the result of a dominant or recessive mutation. You cross a short-w
    6·1 answer
  • A farmer stopped maintaining a field that was once used to grow crops. Overtime the field eventually became a forest. These chan
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!