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
IRISSAK [1]
3 years ago
15

Almost all the South American and Central American

Biology
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

O founder's effect

Explanation:

A founder effect can be defined as the loss of genetic variation when a new population is established from a few individuals. This process is known to increase the frequency of particular gene variants (alleles) at different <em>loci</em> when they are selectively neutral (or nearly neutral), and thereby such genes are fixed by genetic drift (i.e., through the random sampling of founder individuals). Interestingly, it has been discovered that the majority of South American and Central American Indians are nearly exclusively in the O blood group, which has been further associated with random genetic drift and a founder effect.

You might be interested in
Northern flickers are woodpeckers of the eastern United States. Males, but not females, have black feathers that resemble a mous
jek_recluse [69]

Answer:

This suggests that the moustache is a releaser for aggression.

Explanation:

<em>Fixed action patterns</em> are instinctive programmed responses in different species that are triggered by a specific external sensory stimulus. These stimuli are called sign stimuli or releaser. When the sign occurs, the animal starts a sequence of acts in response to the stimulus and continuous until the series of actions is completed.

The black feathers resembling a mustache in a <em>Northern flickers</em> male are an external sensory stimulus. This trait that can provoke another male to respond aggressively, as a f<em>ixed action pattern</em>.  

This trait might be considered as an <em>unconditioned stimulus</em>, which <em>provokes an unlearned or reflex reaction</em>. These aggressive responses are triggered by reflex.

7 0
3 years ago
Describe the organization of living things from atoms to organisms. How are<br> they different?
kifflom [539]

Answer:

Living things are highly organized and structured, following a hierarchy that can be examined on a scale from small to large. The atom is the smallest and most fundamental unit of matter. ... A molecule is a chemical structure consisting of at least two atoms held together by one or more chemical bonds.

Explanation:

8 0
3 years ago
Which statement is true about the law of reflection?
Leya [2.2K]

Answer:

The law of reflection defines that upon reflection from a smooth surface, the angle of the reflected ray is equal to the angle of the incident ray, with respect to the normal to the surface that is to a line perpendicular to the surface at the point of contact.

The reflected ray is always in the plane defined by the incident ray and the normal to the surface at the point of contact of the incident ray.

The images produced by plane mirrors and curved mirrors can be understood by the law of reflection.

Law of reflection is defined as:

The principle when the light rays falls on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in the same plane.

What is Reflection of Light?

The process through which light rays fall on the surface and gets bounced back is known as a reflection of light.

Explanation:

8 0
2 years ago
In year 0, there are 789 bees in a population. The death rate is .21bees/year and the birth rate is .14bees/year. What will the
adoni [48]

Answer:

hcfdfvjxdhjgxgm

Explanation:

6 0
3 years ago
Why do I have to improve my grade?
lutik1710 [3]

Answer:

So you don't fail your class. College also matters as well...

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Is plastic biotic or abiotic?
    14·2 answers
  • Which situation could cause an ecosystem to lose its equilibrium
    13·2 answers
  • Im crying because im so in a hurry help me fastas you can in this science question.
    11·1 answer
  • Where in a cell does most ATP production take place.<br><br> where do cells come from?
    9·2 answers
  • What is not contained in our blood?
    7·2 answers
  • What hypothesis did Mendel formed before testing the pea plants?
    10·1 answer
  • 1. What kind of pattern do you notice with the structure of DNA? For example, what pattern do you see with the rails and rungs o
    13·1 answer
  • A. The organisms that fit in boxes 2, 3, and 7
    13·1 answer
  • Endangered species are ?
    5·1 answer
  • Which is a sequence of actions that a system undergoes?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!