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lilavasa [31]
3 years ago
8

Dominance hierarchies

Biology
1 answer:
Musya8 [376]3 years ago
4 0

Answer:

The correct answer is option B. likely give dominant males and females a reproductive advantage .

Explanation:

Dominance hierarchy is a social hierarchy in which members of a group of animals interact with each other to form a ranking system or superiority and inferiority of the organism. In such social groups, members have to compete for access for the food and resources which are limited.

Mating is also decided on the basis of the dominance of males and females in such social groups. Dominant male-female have always advantage for mating in comparison to lower members in the ranking.

For instance, female baboon mated to a dominant male or high ranked male so she can get high rank as well for the time of period.

Thus, the correct answer is option B.  likely give dominant males and females a reproductive advantage .

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Parkinson disease is associated with demyelination of CNS neurons. a pyramidal nerve tract lesion. insufficient production of ac
Pepsi [2]

Answer:

The correct option is: <em>a deficiency of dopamine in the substantia nigra.</em>

Explanation:

The substantia nigra is the principal site involved in the physiopathology of Parkinson´s disease.

Cells from this area degenerate and die progressively causing important degeneration in the central nervous system. The cells that die -with no known reason- are those that produce dopamine and proportionate dopaminergic innervation to the encephalon. In fact, almost all the symptoms exhibited by patients with the disease can be explained by the lack of dopamine in the substantia nigra.  

This area uses the neurotransmitter to communicate neurons from the base ganglia. Ganglia are responsible of modulating and modifying movements.

The nigrostriatal system participates in planning and automatic execution of learned movements. When the ganglia activity decreases, so it does the amount and velocity of movements, something typical of the disease.  

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2 years ago
Which is NOT a source of genetic variation among individuals?
mafiozo [28]
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8 0
3 years ago
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a_sh-v [17]

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4 0
3 years ago
Se forma entre dos átomos que comparten uno o más electrones : uno solo de los dos átomos enlazados aporta dos electrones y el o
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In a dihybrid cross with genotypes JjQq and JJQq, what is the probability of getting an offspring with genotype JjQq?
valentina_108 [34]
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There are two JjQq. 
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6 0
3 years ago
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