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Andreyy89
3 years ago
9

What is dopamine? What role does it play in the brain

Biology
1 answer:
ozzi3 years ago
8 0
Dopamine is a neurotransmitter and it is responsible for transmitting signals between the nervous cells of the brain.
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Assume that two genes are 80 map units apart on chromosome II of Drosophila and that a cross is made between a doubly heterozygo
STatiana [176]

Answer:

The recombination frequency between two genes exhibits a positive correlation with the distance between them, that is, farther they are, and more will be the chance of recombination. Thus, recombination frequency is used to signify distance among the two genes, for example, 1 percent recombination frequency demonstrates distance of 1 map unit.  

Let us consider that the heterozygous female of genotype AaBb can generate four kinds of gametes, that is, AB, Ab, aB and ab. Of these, the two gametes are the outcomes of recombination, or it can be said that 50 percent are recombinants. Thus, it can be concluded that in case of two linked genes, the maximum probable recombination frequency is 50 percent.  

This shows that any genes, which are distant than 50 map units will function as unlinked and will function as if they were on distinct chromosomes, and the frequency of recombinant frequency will be 50 percent.  

In the given question, it is given that the map distance between the two genes is 80 map units, that is, more than 50 map units. The maximum probable recombinant offspring will be 50 percent of the entire offspring.  

6 0
3 years ago
What does demographics mean?
JulijaS [17]
Statistical data relating to the population and particular groups within it.
3 0
3 years ago
Read 2 more answers
The black dots that cover strawberries are actually individual fruits. The fleshy and tasty portion of a strawberry derives from
yaroslaw [1]

Answer:

C) both an aggregate fruit and an accessory fruit

Explanation:

When several flower ovaries or receptacle of a flower with many separate carpels joins together they form aggregate fruit. Each ovary has a single ovule that converts into a seed after fertilization.

Aggregate fruit can be formed without the involvement of accessory parts called true aggregate fruit or with the involvement of additional floral parts called accessory aggregate fruit. Strawberry is also an accessory aggregate fruit because the different ovaries in the strawberry develops into achenes over the surface of flower receptacles.

4 0
3 years ago
What is a distinction that can be drawn between macroevolution and microevolution?
nikitadnepr [17]
<span>Microevolution refers to changes in the genetic pool of a species population. The changes in the genes (probably gene and allele frequencies) are observed over short time periods hence are small changes. This is in comparison to macroevolution that observes huge changes over longer time periods  in the population that warrant that the new populations is considered to be a new species</span>
8 0
3 years ago
A scientist hypothesizes that if the inner membrane of a mitochondrion were smooth instead of folded, less ATP would be produced
I am Lyosha [343]

Answer:

i think its bcz

ATP if formed by deeply folded membrane

So if the membrane is smooth instead of folded

it will affect the ATP production

<h2>Im not that sure with the answer</h2>
6 0
2 years ago
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