All categories

2 years ago

The flow chart below indicates the hierarchical levels of the Linnaean classification system.

Biology

1 answer:

Radda [10]2 years ago

7 0

Answer:

Species

Explanation:

The lower down they go, the more characteristics they have in common.

Animals have the least amount of shared characteristics in Domain, but the most in species.

You might be interested in

Explain what scientists think makes Earth a magnet???

GrogVix [38]

Scientist believe that the earth has a spinning core which creates a magnet for the earth

6 0

3 years ago

Read 2 more answers

A genetically heterogeneous population of rice has a mean in the number of days to maturation of 30. Selection for decreased per

chubhunter [2.5K]

Answer:

h² = 0.6

Explanation:

Before answering the question, we need to know a few concepts.

Artificial selection is the selecting practice of a specific group of organisms in a population -that carry the traits of interest- to be the parents of the following generations.

Parental individuals carrying phenotypic values of interest are selected from the whole population. These parents interbreed, and a new generation is produced.

The selection differential, SD, is the difference between the mean value of the trait in the population (X₀) and the mean value of the parents, (Xs). So,

SD = X₀ - Xs

Heritability in the strict sense, h², is the genetic component measure to which additive genetic variance contributes. The heritability might be used to determine how the population will respond to the selection done, R.

h² = R/SD

The response to selection (R) refers to the metric value gained from the cross between the selected parents. R can be calculated by multiplying the heritability h², with the selection differential, SD.

R = h²SD

R also equals the difference between the new generation phenotypic value (X₁) and the original population phenotypic value (X₀),

R = X₀ - X₁

-------------------------------------------------------------------------------------------------------------

Now that we know these concepts and how to calculate them, we can solve the proposed problem.

Available data:

You are selecting rice´s decreased period of maturation.
The population of rice has a mean maturation time of 30 days → X₀
Parental selected average period to maturation is 25 days → Xs
F1 plants mature on average in 27 days → X₁
N arrow sense Heritability → h²

According to what we sow previously, we need to find out the value of h².

We know that h² = R/SD, so we need to get R and SD first.

R = X₁ - X₀

R = 27 - 30

R = -3

SD = Xs - X₀

SD = 25 - 30

SD = -5

Knowing this, we can calculate h²

h² = R/SD

h² = -3/-5

h² = 0.6

7 0

2 years ago

Which planet has a surface that is almost entirely covered in liquid water? A. Mars B. Earth C. Mercury D. Venus

qwelly [4]

This is obvious but the correct answer is B. Earth

HOPE I HELPED

6 0

3 years ago

Read 2 more answers

Cation‘s are formed by what

Anuta_ua [19.1K]

Here is your answer

D. Losing electrons

REASON:

Cations means positive ions.

Positive ions are formed by losing electrons which increase positive charge on the body.

HOPE IT IS USEFUL

7 0

3 years ago

21. Three different processes are occurring in the drawing below. Name each process and describe it.

scoundrel [369]

The three different processes that are occurring in the above drawing are:

1. Process A: Diffusion.

2. Process B: Facilitated diffusion.

3. Process C: Active transport.

Cell transport refers to the movement of ions, molecules, or substances across the cell membrane, either into or out of the cells of a living organism.

From the above diagram, the three (3) different processes that are occurring are:

1. Process A: Diffusion.

Diffusion refers to the movement of gas molecules from a region of high concentration (top) to a region of lower concentration (bottom) until an equilibrium is attained or reached.

2. Process B: Facilitated diffusion.

Facilitated diffusion refers to the movement of substances or gas molecules across a cell membrane from a region of high concentration (top) to a region of lower concentration (bottom), especially through the help of transport protein.

3. Process C: Active transport.

Active transport involves the movement of substances across the cell membrane from a region of lower concentration to a region of higher concentration, against a concentration gradient and in the presence of oxygen.

6 0

2 years ago