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Leviafan [203]
3 years ago
12

Will give brainliest

Biology
1 answer:
pickupchik [31]3 years ago
7 0
The landscape is a combination of nutritious grasslands and sparse woodlands: grassy areas dotted with Acacia trees, the iconic image of the Serengeti. The entire ecosystems spans 30,000 km^2 from North Tanzania extending to south- western Kenya.
- Hope this helps!
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What percentage of offspring from a cross between a homozygous type A parent with a heterozygous Type A parent is expected to co
snow_lady [41]

The correct answer is option B, 50%

Let us take the following case:

Genotype of heterozygous parent - (Aa)

Genotype of homozygous parent – (aa)

Allele I  - (Aa)

Allele II – (aa)

The cross between the two is shown below:

Aa  X aa

Aa, Aa, aa, aa

There are 50 % Aa, and 50 % aa allele.  

Thus, the allele I (Aa) is 50 %.  

8 0
3 years ago
The function of a cell wall in a plant cell and the cell membrane in an animal cell are the same and different because
TEA [102]
They are not the same
8 0
3 years ago
En los alérgicos, a partir del segundo contacto con el alérgeno cuando se produce la reacción alérgica. ¿Cómo podrías explicarlo
dem82 [27]

Answer:

La segunda exposición desencadena la fase de 'respuesta' asociada a la reacción alérgica  

Explanation:

La alergia se puede considerar como una respuesta desmedida del sistema inmune cuando un individuo entra en contacto con ciertas sustancias que son inocuas para la mayoría de la población, pero que en personas alérgicas desencadenan fuertes reacciones de hipersensibilidad. La alergia tiene dos fases conocidas como fase de sensibilización y fase de respuesta. La primera fase de sensibilización es donde el individuo entra en contacto con los 'antígenos' del alérgeno, lo cual provoca que el individuo genere anticuerpos IgE los cuales combaten al alérgeno (el sistema inmune considera que esta sustancia es potencialmente dañina), mediante la generación de anticuerpos de IgE que se unen a receptores de células del sistema inmune (eosinófilos, basófilos y mastocitos). La segunda fase de respuesta se produce cuando el individuo entra de nuevo en contacto con el alérgeno. Durante el segundo contacto, los antígenos del alérgeno interactúan con anticuerpos específicos de IgE que se encuentran sobre la superficie de células del sistema inmune, desencadenando la degranulación de estas células (mastocitos) y la consecuente liberación de mediadores químicos de la alergia tales como, por ejemplo, histamina, los cuales son responsable de los síntomas típicos de la alergia (tos, estornudos, picor, enrojecimiento de ojos, urticaria, inflamación, etc.).

4 0
2 years ago
Which best defines cohesion?
Illusion [34]
The action or fact of forming a united state that seems as the best answer
3 0
3 years ago
Read 2 more answers
A physician conducts a survey among 100 patients suffering from migraine headaches to assess the range of headache severity amon
geniusboy [140]
In order to interpret the results obtained from this kind of survey, we simply could not rely on the number alone.
So, the data analysis that he would likely to apply to interpret the results would be : Qualitative and inferential

hope this helps
7 0
3 years ago
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