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Sliva [168]
3 years ago
6

Which condition is essential for natural selection to result in a new species?

Biology
1 answer:
RSB [31]3 years ago
4 0
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
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What distinguishes disruptive and directional selection pressures when both select for extreme genetic traits?
Stella [2.4K]

Answer:

Yes both are different. In directional selection one of the extreme traits is favored, whereas in disruptive selection both the extreme traits are favored.

Explanation:

Directional: If selection acts to eliminate one extreme form and supports the other extreme then the peak shifts in the direction which is selected by the nature.

Disruptive: If the selection does not favor the mean character value, rather favors both the peripheral character values then this kind of selection is called disruptive selection.

5 0
3 years ago
Read 2 more answers
Differentiate between Angiosperms and gymnosperm​
DedPeter [7]

Answer:

Angiosperms are vascular plants bearing the seeds in fruits or mature ovaries whilst gymnosperms are other types of the plant which bears the seeds directly on the sporophylls but without any cover.

Explanation:

Examples of gymnosperms include cypress,pine, redwood, spruce and ginkgo.

Examples of angiosperms include apple, banana,peach, cherry and orange.

Also, angiosperms are seeds producing flowering plants whose seeds are enclosed within an ovary.

Gymnosperms are also seeds producing non flowering plants whose seeds are unenclosed.

Hope it helps.

Please mark as brainliest .

4 0
3 years ago
A child is brought to the emergency department struggling to breathe with a prolonged bronchospasm and severe hypoxemia. Assessm
drek231 [11]
Pulmonary embolism because it’s unlikely to have a high heart rate with others
4 0
3 years ago
what is the characteristic of a cell membrane that controls which substances can enter and exit the cell
lorasvet [3.4K]

Answer:

selective permeability

Explanation:

The property or characteristic of cellular membrane to allow certain substances to pass through the cell is known as selective permeability. The movement of molecules and ions across the cell can be active or passive.

3 0
3 years ago
What types of molecules may not need transport proteins to be able to cross cytoplasmic membranes?
frozen [14]

The correct answer is small hydrophobic molecules.

The smaller the molecule and the more hydrophobic, or nonpolar, it is, the more rapidly it will diffuse across a membrane. It is because of the composition of membrane (lipid bilayer). By contrast, membrane is highly impermeable to charged molecules (ions), no matter how small they are.


4 0
4 years ago
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