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
docker41 [41]
3 years ago
8

Identify the four postulates of natural selection.A challenge to traditional (pre-1860) ideas about species came from embryology

, when it was discovered that _____.
Biology
1 answer:
victus00 [196]3 years ago
7 0
<h2>Postulates of natural selection</h2>

Explanation:

  • Early in development, all vertebrate embryos are remarkably similar. The similarities among the embryos imply that the development of all vertebrates (having a backbone) evolved as new genetic instructions were placed on  Top of older ones.
  • The chick embryo is on the right. It is easier to compare a newly hatched chick and a newborn baby. After birth, a backbone or vertebrae are clearly visible, as are legs, a mouth, a pair of eyes, etc. The chick’s  Skeletal system, in general, has multiple similarities to ours, including having one bone in the upper leg and upper wing and two bones in the lower leg and lower wing. This mimics our arm and leg skeletal structures.
  • Mammals, birds, reptiles, and fish, look very similar at the earliest stages of growth inside the womb of the mother animal.Vertebrate embryos begin developing similar features due to related ancestors. As the embryo grows, it may drop some of these ancestral traits as the genetic code becomes more specific for that species.

You might be interested in
In low-nitrogen conditions UCYN-A participates ina mutualistic symbiotic relationship with other organisms in the microbial mat.
Lerok [7]
UNVY-A is supoorted by other things u dint need more chemicals

5 0
2 years ago
Read 2 more answers
What is the complete factorization of the polynomial below x^3+2x^2+4x+8
lina2011 [118]

Explanation:

(X3+8)+( 2X2+ 4X)

(X+2)(X2-2X +4) + 2X(X+2)

(X+2)(X2-2X+4+2X)

(X+2)( X2+4)

4 0
3 years ago
Read 2 more answers
What causes the formation of a cervical plug a testorone b progesterone c luteal d estroge e follicle
olga nikolaevna [1]

Answer:

b progesterone

Explanation:

The plug is formed as soon as there is implantation of fertilized eggs. The thickness of the cervical mucus becomes different as hormone levels changes in pregnancy.  

The progesterone, encourages the production of thick fluid/ mucus  which brings about the formation of a plug. This prevents bacteria from getting into the uterine cavity.

7 0
2 years ago
Read 2 more answers
The pressure waves passing through the perilymph of the cochlea compress the vestibular membrane is called
zhenek [66]

Answer: High Frequency waves by method of compression bone conduction

Explanation: in this, vibration of the bones of the skull and sometimes, arguably soft tissues leads to the production of sounds. The outer and middle ear is bypassed in this method of sound production. Sound reaches the inner ear directly and its a process largely involved in designing hearing aids.

7 0
3 years ago
According to the theory of _______, most of Earth's current species developed from distinctly different species which existed ea
n200080 [17]
According to the theory of evolution, most of Earth's current species developed from distinctly different species which existed earlier in time.
7 0
2 years ago
Other questions:
  • What factors improve soil fertility
    15·1 answer
  • Which type of cell division produces daughter cells that are identical to the original cell?
    12·1 answer
  • Which of the following would most likely be found in the sands at Myrtle Beach?
    12·1 answer
  • Water acts as a(n) _____.<br> A) solvent<br> B) solute<br> C) D) ionic compound
    5·2 answers
  • In humans, random mating is most likely to occur for which of the following characteristics? Select one:B. personality C. physic
    5·1 answer
  • Explain how an unbalanced translocation occurs and how it affects humans.
    13·2 answers
  • Which statement best explains an environmental outcome of using fossil fuels for energy? (1 point)
    12·1 answer
  • How can I identify an organelle? Please help I have till 11:59 to answer this question.
    9·1 answer
  • Use the diagram below to answer the following questions for 1 point each:
    14·1 answer
  • Define Scientific method ?​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!