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natali 33 [55]
2 years ago
7

How could the duplication of the Hox gene complex help facilitate animal adaptive radiation?

Biology
1 answer:
cestrela7 [59]2 years ago
4 0

Answer:

Duplication of hox genes is important in the radiation of animals because they are regulating genes of symmetry and the body plan of the animals' bodies. Some change or mutation in these genes during duplication can cause mutations and with these evolution of the species as it controls the different segments of these animals as they develop, launching the genetic programs that form various body structures, such as limbs and organs. .

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If the length of the absolute refractory period in cardiac muscle cells was the same as it was for skeletal muscle ________.
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Tetanic contractions might happen, which would lead to the heart to stop pumping 
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A cell is in a equilibrium with its surrounding at 30 degrees Celsius. The molarity of surrounding sucrose solution is 0.5m. Cal
Travka [436]

Solute potential of a solution is calculated using the formula,

Ψ_{s}=-(iCRT)

Where,

Ψ_{s}is the solute potential of the solution,

<em>i</em> is the degree to which the solute ionizes(ionization constant) in solution = 1, as sucrose is a nonelectrolyte.

C is the concentration of the solution in molarity = 0.5 M

R is the gas constant or the pressure constant = 0.0831 L.bar/(mol.K)

T is the temperature in Kelvin scale = 30^{0}+273 =303 K

Calculating the solute potential of the surrounding sucrose solution:

Ψ_{s}=-(iCRT)

              = -(1 * 0.5 M * (0.0831 L.bar/(mol.K))* 303 K)

              = 12.6 bar

Therefore, the solute potential of the surrounding solution is 12.6 bar

7 0
1 year ago
Hormones are chemical molecules produced by endocrine glands. One such endocrine gland is the thyroid gland, which synthesizes t
julsineya [31]

Yeah its definitely 1 and 5

4 0
1 year ago
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Somatic cells of roundworms have four individual chromosomes per cell. How many chromosomes would you expect to find in an ovum
andrezito [222]

Answer:

2 chromosomes

Explanation:

The cell of an eukaryotic organism like roundworm contains the Nucleus, which harbors the genetic material embedded in the chromosome. The number of chromosomes of that organism is contained in each cell.

Somatic cells, also called body cells, are all other cells asides sperm and eggs, that form the tissues and organs of an organism. Somatic cells are usually diploid i.e two sets of chromosomes from each parent. In this question, the roundworm has 4 chromosomes in its somatic cell.

The reproductive cells or sex cells (sperm and eggs) of an organism always result from meiotic division of specialized cells.

Since meiosis is a kind of division that results in cells with their chromosome number reduced by half (haploid), it therefore means that the ovum and sperm cell will be expected to contain 2 chromosomes each.

This way, when fertilization occurs (sperm and egg fusion), the resulting zygote, which will eventually develop into an adult organism, will have 4 chromosomes.

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1 year ago
What is the main thing plants compete for in poor soil
pashok25 [27]

Answer:

water

Explanation:

in poor soil most of the water would get sucked up into more powerful plants [larger plants]

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