Answer:
<em>change</em><em> </em><em>in</em><em> </em><em>genetic</em><em> </em><em>structure</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>popu</em><em>lation</em><em> </em><em>over</em><em> </em><em>time</em>
In an ecosystem, there are primarily four basic types of Trophic levels.
Trophic level: In biology, a "trophic level" is a distinct collection of several animals that often occupy the same level of a "food chain" within a certain "ecosystem."
Since, in terms of macromolecules, all energy originates from plants. The tropic levels are filled with plant energy that rises. It might provide structural support for the upper tropic levels as well.
In a particular ecosystem, there are four different trophic levels or types:
- "Producers" refer to the algae and plants that make their own sustenance.
- Known as "principal consumers," herbivores typically devour vegetation.
- "Secondary consumers" are carnivores that frequently ingest herbivores.
- "Tertiary consumers" are carnivores that frequently consume other carnivores.
To learn more about tropic levels refer the link:
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Answer:
a. a nontaster girl= 1/8
b. a taster girl= 3/8
c. a taster boy= 3/8
Explanation:
Let's assume that the allele "T" is responsible for the taster phenotype while the recessive allele "t" gives the nontaster phenotype. The taster woman had a nontaster father (tt). Therefore, she is heterozygous dominant (Tt). The taster man had a nontaster daughter (tt) which means that he also has one "t" allele and his genotype is "Tt".
A cross between Tt and Tt would produce progeny in following ratio=
Tt x Tt= 3/4 taster: 1/4 nontaster
The probability of sons and daughters during each reproduction is=
XX x XY= 1/2 XX and 1/2 XY
Therefore,
a. probability of having a nontaster girl= 1/4 x 1/2 = 1/8
b. a taster girl= 3/4 x 1/2 = 3/8
c. a taster boy= 3/4 x 1/2 = 3/8