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aleksandrvk [35]
3 years ago
8

When Native Americans first encountered Europeans, what led to the European diseases being so deadly?

Biology
1 answer:
Anarel [89]3 years ago
6 0

Answer:

The War I think

Explanation:

What led to the European disease was the cause of the war that made many Americans come and then it called the disease

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The answer will probably be a
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Mr.johnson was speeding to get to school on time and was clocked at a speed of 120 km/h on a major highway. Express the speed of
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Divide by 1000. Memorize you SI units
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Un laboratorio que produce una fórmula para matar piojos recibió muchas quejas de parte de sus
Rom4ik [11]

Answer:

Es probable que a través del tiempo la población de piojos también se vuelva resistente al segundo pijojicida. Los piojos resistentes se generan por un proceso de selección natural  

Explanation:

La evolución es el proceso mediante el cual los organismos cambian (evolucionan) con el tiempo con el fin de adaptarse a sus condiciones ambientales. La selección natural opera seleccionando aquellos individuos mejor adaptados al ambiente en el cual cada individuo se desarrolla. Los individuos adaptativamente superiores poseen más chances de sobrevivir y de reproducirse, trasmitiendo de este modo sus genes a la descendencia. Las mutaciones representan la fuente principal de variabilidad genética en la forma de nuevos alelos y genes. Las mutaciones que son beneficiosas y confieren una ventaja adaptativa son seleccionadas por selección natural. En este caso, la resistencia al primer piojicida se debió a la aparición de una o más mutaciones las cuales confirieron resistencia al primer compuesto. Con el tiempo, la frecuencia de los individuos portadores de mutaciones beneficiosas en la población de piojos fue incrementándose paulatinamente (como resultado del proceso de selección natural). Es muy probable que este proceso evolutivo también se repita con el segundo piojicida.

4 0
3 years ago
Tears and mucus membranes would be a part of which defense system?
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3 years ago
Consider a population of 425 diploid giant Sequoia trees. In this population, you observe the following genotypic counts: 100 ho
Lemur [1.5K]

Answer:

q = 0.42

Explanation:

This question is an example of Hardy-Weinberg question and there are two equations necessary to carry out this question;

p + q = 1

p² + 2pq + q²  = 1

where;

p = the frequency of the dominant allele

q =  the frequency of the recessive allele

p² = the frequency of individuals with homozygous dominant genotype

2pq  = the frequency of individuals with heterozygous genotype

q² = frequency of individuals with the homozygous recessive genotype

Since the total  population = 425

q² = \frac{individuals with recessive genotype}{Total Population}

= \frac{75}{425}

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To find q; we need to square root both side to           eliminate the square from  q².

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3 years ago
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