The answer is punctuated equilibrium. This is a theory in evolutionary biology that says the evolution of different species proceeds in a characteristic way of relative stability for very long periods interspersed with shorter periods. During this period new species emerge as others become extinct.
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>
The rounded top portion of the uterus that is situated in-between the uterine tubes is known as the fundus.
A brief explanation of the uterus:
The uterus is the most important hormonally sensitive organ of the female reproductive system in humans and most other animals. The upper region of the uterus, which is above where the fallopian tubes are, is referred to as the "fundus." The region between the corpus and the cervix is known as the isthmus, and it is narrow and situated near the intersection of the internal os of the cervix and the uterine artery.
What does uterine fundus actually mean?
a hollow sphere's area that is opposite or farthest from the organ's opening. Depending on the organ, the fundus might be located at either the top or bottom of a site. The fundus of a uterus, for instance, refers to the upper part of the uterus that lies opposite the cervix.
Learn more about fundus here:
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Answer:
The main biome in Alaska is Tundra.
Explanation:
According to the map the state Alaska's main environment is covered in light blue which in this case indicates the tundra biome. In case you were not aware Alaska is the northwestern most region.
I hope this helps! :D
Carbohydrate digestion begins in the mouth<span>.</span>
