Answer:
4: epistasis
Explanation:
<em>Epistasis is a form of gene interaction in which a gene on one locus modifies or suppresses the effects of another gene on a separate locus. </em>
Epistatic gene interaction can be dominant, recessive, duplicate recessive, duplicate dominant, or polymeric gene interaction.
- Recessive epistasis occur when a recessive allele at one locus suppresses the expression of alleles on separate locus/loci.
- Dominant epistasis occur when a dominant allele at one locus suppresses the expression of alleles on separate locus/loci.
- Duplicate recessive epistasis occur when recessive alleles at either of two loci suppress the expression of dominant alleles at the two loci.
- Duplicate dominant epistasis occur when dominant alleles t either of two loci suppress the expression of dominant alleles at the two loci.
- Polymeric gene interaction occur when two dominant alleles which have similar effect individually produce enhanced effect when they come together.
<em>In this case, the expression of gene is controlled by the presence/absence of gene N on a separate locus. In homozygous recessive form, gene N suppresses the expression of gene S, a clear case of recessive epistasis.</em>
The correct option is option 4.
Answer:
Compare mitochondria to the digestive system. The cytoskeleton is similar to the skeletal and muscular system. They both provide structure and allows for movement within the cell. The cell membrane is similar to the integumentary system. They both separate and protects the internal structures from the external environment and it regulates water loss.
Explanation:
mark brainliest :)
Answer:
If the fertilizer did not increase the yield of the crop so it means that the material the farmer used is not a fertilizer. Fertilizers has the ability to increase the yield of crops due to supply of essential nutrients that a plant requires for their growth and development.
There are two reasons if fertilizer did not work.
1) If the soil contains sufficient nutrients and you apply fertilizer so it causes toxicity and crop yield is adversely affected.
2) There are some crops like leguminous crops which make their own fertilizer through nodules. If a farmer apply fertilizer so it has no use.
This is the correct way to fill out the hierarchy. Hope it helps:)
Plate boundary theory by Alfred Wegener