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
Shalnov [3]
3 years ago
5

Why are scientific theories modified

Biology
1 answer:
Leya [2.2K]3 years ago
6 0
Because as trials go on scientists discover more information and alter the theories and that is why they are referred to as a "theory" instead of a scientific "law"
You might be interested in
What do you think would happen if a trial of the experiment was done with frozen liver and potato?
Lerok [7]

Explanation:

They would react the same as with the vinegar and hydrogen peroxide at room temperature. They would react the same as with just the hydrogen peroxide.

4 0
2 years ago
A client who was trapped inside a car for hours after a head-on collision is rushed to the emergency department with multiple in
meriva
This finding indicates the damage of the mid-brain
This is evident due to the Decerebrate posturing, which is characterized by abnormal extension in response to painful stimuli, that indicates damage of the midbrain. On the other hand, damage to the diencephalon or cortex, abnormal flexion, occurs when a painful stimulus is applied. While medulla damage results in flaccidity.
7 0
3 years ago
Sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous
Pavel [41]

Answer:

6,25%

Explanation:

Considering that the couple has a trait of sickle cell anemia, we know that both are heterozygous for the disease (Aa) and therefore can have children with the following genotypes:

Parents: Aa X Aa

Children: AA(A x A), Aa(A x a), Aa (a x A) and aa(a x a)

Knowing that sickle cell anemia only occurs in homozygous individuals, the probability for children to have the disease according to each crossing is:

A x A = 1/4 = 25%

A x a = 1/4 = 25%

a x A = 1/4 = 25%

a x a = 1/4 = 25%

The probability of forming each homozygous child (aa) is 1/4 or 25%. Since they are two children, the probability of both having sickle cell anemia is calculated by multiplying the probability of each, so:

1/4 × 1/4 = 1/16 = 0.0625 = 6.25%

It is concluded that the probability of a heterozygous couple for sickle cell anemia to have two children with the disease is 6.25%.

6 0
3 years ago
“Heredity and environment play an important role in determining human development and behavior”.
vovikov84 [41]

Answer:

Heredity is a term that refers to something we have gained from our parents, they can be some physical traits like appearance or behavioral traits like generosity, ethics etc.

When we talk about development of an individual, science has proved that both heredity and environment play a crucial role. There is no doubt that certain things are predetermined in our genetic make up like our height, weight and complexion etc but there are several ways in which environment influences and modifies those traits.

Let's take some examples:

  • A kid is born in Africa whose parents inherited just appropriate and ideal height and intelligence to him, But he was surrounded by the conditions where he could not get sufficient food , minerals and nutrients that hindered  not only his physical growth and development but his intelligence level did not reach that potential too that was predetermined in  his genes. So, we can say that environment influenced the kid and modified the traits he inherited from parents.
  • Similarly, there are many boys that inherit fair complexions from their parents but they have a lot of sun exposure due to out door sports and activities. So, parents observe that after teens their complexion is getting towards darker tone although in preadolescence they were just as fair as other siblings. This is proven by studies that sun exposure turns the skin tan and darker than original tone.

Therefore, we can say that both Heredity and environment play an important role in determining human development and behavior.


Hope it help!

5 0
3 years ago
Which statement is true for both plant and animals cells?
bulgar [2K]

Answer:

Nuclei and vacuole

Explanation:

But in animal cell vacuole are temporary exist

3 0
3 years ago
Other questions:
  • Which of the following represents the path that an action potential travels as it moves from one neuron to another?
    9·1 answer
  • Identify the types of point mutations depicted
    5·1 answer
  • Ronald makes his own chicken broth. He uses the tool shown below to separate the broth from the fat. Why does this tool work to
    13·2 answers
  • Molecules that have the same chemical formula but have different molecular structures are
    8·1 answer
  • Steven pushes a crate across a warehouse floor. If the crate moves at a constant speed in a straight-line path, which statement
    13·1 answer
  • How does the purpose of he Krebs cycle differ from the purpose of the calvin cycle
    6·1 answer
  • A biologist claims to have discovered a single-celled organism that is evolutionarily unrelated to any organisms known to inhabi
    14·1 answer
  • During transcription, DNA is made into a molecule of _________________ which will travel to the ___________________ in the cytop
    6·1 answer
  • Put the steps of zygomycete sexual reproduction in the right order. Start with the production of multinucleate gametangia at the
    9·1 answer
  • A gamete contains 15 chromosomes, how many chromosomes does the parent have?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!