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What was the second organism to be found here on planet Earth? *

mafiozo [28]

What was the second organism to be found here on planet Earth?

Prokaryotes

The prokaryotes are considered to be the most oldest on earth. The first found organism on earth was bacteria and then many other Prokaryotes were found...~

7 0

1 year ago

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If a father is affected by an X-linked dominant condition and the mother is not, which children can inherit the condition?

kaheart [24]

Answer:

only females

Explanation:

In humans, sex chromosomes in males and females are different. The sex chromosomes found in humans are X and Y chromosomes. X-linked trait is a trait which is inherited on the X- chromosome. According to the question, the trait is passed on a X-linked dominant condition, which means the condition is inherited on the abnormal dominant X-chromosome that will express itself even when in an heterozygous state with a normal X-chromosome.

Hence, a father affected by the condition will have a genotype; XY while a mother that does not have the condition will have a genotype: xx (two normal x chromosomes). Since the Father can only pass his X chromosome to his daughters and never his sons, all his daughters will inherit the condition (see the punnet square in attached image).

N.B: None of the sons will inherit the condition since the mother will pass normal X-chromosomes (x) to her sons.

7 0

2 years ago

What are some positive effects humans can have on nitrogen cycle

inn [45]

Answer:

Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.

Explanation:

6 0

3 years ago

What explanation can account for this paradox? In other words, explain why:1. the seeds in light, with no water had more biomass

nikitadnepr [17]

I think that the answer is 2 but the plants have more volume and more total weight than the seeds

7 0

2 years ago

What is convergent volcanism?

Artemon [7]

Answer:

As one plate moves into subduction zone, magma is formed and moves upward. As magma rises, it picks up rocks, minerals, and sediments from overlaying plate. Most volcanoes on land are because of oceanic-continental subduction. Characterized by explosive eruptions

Explanation:

7 0

3 years ago

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