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
Mrrafil [7]
3 years ago
15

What is an example of something that exist in natural systems?

Biology
1 answer:
k0ka [10]3 years ago
5 0

Answer:

hope you like it

Explanation:

Examples of natural systems include: real number system, solar system, and planetary atmosphere circulation systems.

Natural physical systems include the solar system and an animal's digestive system. Human-made physical systems include mechanical systems, optical systems, electrical systems, and combinations of these. The names of these systems come from the type of energy they use.

You might be interested in
074<br>Discuss the trends of taxonomy<br>today?​
sesenic [268]

Answer:

The general interest about biodiversity conservation, the advances of internet and web pages, the progress in molecular techniques, the development of statistics in phylogeny, and the new taxonomic funding initiatives and global projects are giving some light: taxonomy is getting fashionable again and topics

Explanation:

5 0
3 years ago
The fur color in a colony of mice has been brown for many generations. One gene appears to code for the fur color pigment. In a
creativ13 [48]

Answer:

A mutation in the DNA sequence of the gene for brown fur  

Explanation:

The mutations are capable of changing the encoded protein product, in this case the gene that encodes for the fur color pigment. This mutation may have occurred during mitosis or meiosis divisions.

If it is a spontaneous mutation that occurred in the germinal line (meiosis) and confers an adaptive advantage, it will increase their frequency in the population.

5 0
3 years ago
The following F2 results occur from a dihybrid cross (AaBb x AaBb): purple: A_B_ 9/16 white: aaB_ 3/16 white: A_bb 3/16 white: a
e-lub [12.9K]

Answer:

b. 3 (whilte) : 1(purple)

Explanation:

The first dihybrid crossing is between AaBb x AaBb

Now, if the double heterozygous traits self crossed, we have the following gametes shown below for the F₂ crossing.

AaBb = (AB, Ab, aB, ab)

                    AB                     Ab                     aB                     ab

AB                AABB                AABb                AaBB                AaBb

Ab                AABb                AAbb                AaBb                Aabb

aB                AaBB                 AaBb                aaBB                aaBb

ab                AaBb                 Aabb                 aaBb                aabb

We were being told that the results are;

purple: A_B_ 9/16

white: aaB_ 3/16

white: A_bb 3/16

white: aabb 1/16

From above, we can see that the same is true;

For Purple color; we Have (AABB and AaBb) since A is dominant to a and B is dominant to b.

∴ From the above punnet square; we have 9 purple colors which are:

(AABB, AABb, AaBB, AaBb, AABb, AaBb, AaBB, AaBb, AaBb) = 9/16

white: aaB_ ( since B is dominant to b, it can be either BB or Bb)

= (aaBB, aaBb, aaBb) = 3/16

white: A_bb ( since A is dominant to a, it can be either AA or Aa)

= (AAbb, Aabb, Aabb) = 3/16

white: aabb i.e homozygous recessive = (aabb) = 1/16

Furthermore, the question goes further by saying:

If a double heterozygote (AaBb) is crossed with a fully recessive organism (aabb), what phenotypic ratio is expected in the offspring?

If AaBb self crossed, we have:  (AB, Ab, aB, ab)

If aabb self crossed, we have: (ab, ab, ab, ab)

                    AB                     Ab                     aB                     ab

ab                AaBb                Aabb                aaBb                 aabb

ab                AaBb                Aabb                aaBb                 aabb

ab                AaBb                 Aabb               aaBb                 aabb

ab                AaBb                 Aabb                aaBb                aabb

AaBb ( purple)

= 4/16

= 1/4

= 0.25

= 25%

Aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

aaBb (white)

= 4/16

= 1/4

= 0.25

= 25%

aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

Now the proportion of white to purple =  (25%+25%+25%): 25%

=  75%:25%

= 3(white):1(purple)

We can therefore conclude that the expected phenotypic ratio in the cross between a double heterozygote (AaBb) with a fully recessive organism (aabb) yeids;

3 (whilte) : 1(purple)

8 0
3 years ago
Critics of sustainable agriculture claim that its farming methods will result in _________________. A) water pollution B) lower
Vinil7 [7]

Critics of sustainable agricilture claim that its farming methods will result in <u>lower crop yields</u>.

B) lower crop yields is your answer

I hope this helps you!!!!

4 0
3 years ago
Which memory failure suggests that our memories may fade somewhat over time?
yKpoI14uk [10]
I'm pretty sure they are reffering to Alzheimers.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the term for classifying and grouping organisms?
    15·2 answers
  • What percentage of the oceans floor is found in the abyssopelagic zone?
    7·2 answers
  • HELP ASAP! 5 questions
    6·1 answer
  • Please i need help !!!☹️
    10·1 answer
  • Describe how advances in DNA technolgy are assisting the work of those in medical fields
    8·2 answers
  • Is the transforming factor made of proteins?
    13·1 answer
  • Are seals and monkeys related?
    9·2 answers
  • Which is a feature of a cladogram?
    13·2 answers
  • What would cause a person’s eye color to change from blue to green while that person was a child?
    14·1 answer
  • HELP PLEASE WILL GIVE BRAINLY! <br><br> What is a complementary RNA strand to AGA?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!