<span>When the microscope was invented, it helped the cell theory. This invention allowed scientists to see that everything was made up of cells and see what cells do. They needed this invention in order to see that cells existed and study them more in depth.</span>
Answer:
In species with polyploid, there are more chromosomal sets than in diploid one. Becouse there are more chromosomal structures available, events like mutation, recombination, DNA lose, are more probable to occur.
As the generations pass, the accumulation of these changes tend polyploid to speciation.
Answer:
12:3:1
Explanation:
<em>The typical F2 ratio in cases of dominant epistasis is 12:3:1.</em>
<u>The epistasis is a form of gene interaction in which an allele in one locus interacts with and modifies the effects of alleles in another locus</u>. There are different types of epistasis depending on the type of alleles that are interacting. These include:
- Dominant/simple epistasis: Here, a dominant allele on one locus suppresses the expression of both alleles on another locus irrespective of whether they are dominant or recessive. Instead of the Mendelian dihybrid F2 ratio of 9:3:3:1, what is obtained is 12:3:1. Examples of this type of gene interaction are found in seed coat color in barley, skin color in mice, etc.
- Other types of epistasis include <em>recessive epistasis (9:3:4), dominant inhibitory epistasis (13:3), duplicate recessive epistasis (9:7), duplicate dominant epistasis (15:1), and polymeric gene interaction (9:6:1).</em>
Hey mate!
You stuck?
Humans use selective breeding to pass desired TRAITS on to the next generation of organisms.
Hope this helped!
The correct answer s act late in the disease.
Disease:
- When tumor DNA is studied from cancer patients at various stages, the mutation will be comparable in all of them. Tumor DNA is frequently identified in the blood stream.
- Disease is any adverse variation from an organism's normal structural or functional condition that is typically accompanied by a set of symptoms and is distinct from physical injury in origin.
- illnesses. An abnormal state of an organism that interferes with its normal bodily functioning, frequently causes pain and weakness, and is typically accompanied by symptoms and indicators.
- Disorders produced by organisms, infectious diseases are those caused by microorganisms such bacteria, viruses, fungi, or parasites. Numerous species live inside of our bodies. They are generally advantageous or even secure. But in specific circumstances, some bacteria have the capacity to cause disease.
Learn more about disease here brainly.com/question/19813896
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