BIOLOGY HIGH SCHOOL

What do ecosystems consist of?a. biotic and abiotic factors
b. biotic factors only
c. abiotic factors only

Answers

Answer 1
Answer: Ecosystems mostly consist of both - abiotic and biotic factors. For that reason the answer which would properly address your question would be A - biotic and abiotic factors. Biotic factors are considered to represent the part of nature that are living and affect other organisms while abiotic factors are things which do not affect other living compounds. 

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Fruit flies are commonly used in genetic investigations that focus on traits passed from parents to offspring over several generations. What can you infer is the reason fruit flies are the most commonly used organism for this type of investigation?

How many chromosomes are in a haploid cell?

Answers

First you must know that a diploid cell has double the amount of chromosomes of a haploid cell. A diploid cell has 46 chromosomes. When we divide 46 by 2 you get 23. This means that there are 23 chromosomes in a haploid cell.

Hope this helped!

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Answer:

Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.

Explanation:

The principles of probability can be used toA. decide which organisms are best to use in genetic crosses.

B. predict the traits of the offspring of genetic crosses.

C. determine which species should be used in genetic crosses.

D. determine the actual outcomes of genetic crosses.

Answers

Answer:

Option B, predict the traits of the offspring of genetic crosses

Explanation:

Lets see an example -

Suppose there are two adult cats , where female cat has brown (BB)haired and it is a dominant trait while male cat is recessive grey (bb) haired organism.

If a cross is carried out between these two species then through probability it can be derived that how many species will be grey (Bb) haired

Let see the punnet square for the cross-

B B

b Bb Bb

b Bb Bb

Thus out of four offspring’s produced all the offspring’s are grey (Bb) colored. Thus, there is a 100% probability that if a cross is carried out between female cat having brown hair (BB) and a male cat having black hair (bb), the offsprings will have grey (Bb) hair.

In this way probability can help to predict the traits of the offspring of genetic crosses

The laws of probability can be applied to genetics to make predictions about the traits of the offspring that result from genetic crossings. Therefore, the correct option is B.

Probability enables us to calculate the likelihood that specific characteristics will be inherited, based on the known genetic information of the parent organism. Scientists can predict the possible combinations of genetic characteristics in offspring by understanding the principles of heredity and applying probability calculations.

Probability can forecast and infer, but it cannot predict the actual results of genetic crosses because these are affected by various processes, including random segregation during meiosis and genetic recombination.

Therefore, the correct option is B.

Learn more about Probability, here:

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Which of the following is a need of most plants?

Answers

carbon dioxide and photosynthesis

The avoidance of personal prejudice or bias is an important trait of a scientist. a. True
b. False

Answers

true- it's not good if the scientist changes the outcome and reads data with a bias because then it's not 100% honest. 

How does a bird's beak help you identify it's habitat?

Answers

The shape of the beak can tell you the function of that particular type of beak, and then the habitat in which the bird lives.  For example, a bird with a long, slender beak most likely gets its food from hard to reach crevices in the ground or trees, and a bird with a short, thick beak most likely gets its food from either cracking items open or killing prey, because the shortness of the beak shows that it does not need to reach small places.

What are convection currents

Answers

Answer:

Convection is the transfer of heat due to the bulk movement of molecules within fluids, including molten rock.

Explanation:
(a current in a fluid that results from convection.)

Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology. Convection is different from conduction, which is a transfer of heat between substances in direct contact with each other.
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