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Anarel [89]
3 years ago
13

he island of Madagascar is located just off the SE coast of Africa, in the Indian Ocean. Scientists find species on this island

that have close biological relatives in both Australia and India. They also find that at each location there are fossils of similar organisms. What is the most likely explanation for this similarity between organisms in Madagascar, India, and Australia?
Biology
1 answer:
pogonyaev3 years ago
5 0

Answer:

The ancestor of these organisms lived on a landmass long ago that included Madagascar, India, and Australia.

Explanation:

The three, Madagascar, India and Australia were found together on a piece of land called Gondwana, which were part of the continent called Pangea, approximately 300 million years ago. Gondwana began its separation at the beginning of the Jurassic. Meanwhile, South America began to separate to the west. On the other hand, East Gondwana, which was made up of Antarctica, Madagascar, India and Australia, began its separation from Africa.

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C is the correct answer
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2 years ago
A biology student caught and tagged 50 trout in a small lake. After two weeks, the student caught another 40 trout and found tha
Vlad1618 [11]

The best estimate of the population of trout in the lake is 500 individuals.

The low number of tagged trout recaptured may be because the tags slipped off.

This possibility can be reduced if the student used tags that does not slip off easily.

<h3>Mark and recapture method</h3>

The formula for calculating the estimated number of individuals in the population is given as:

  • N = (M*C) / R

where:

  • N = estimated Number of individuals in the population
  • M = number of individuals captured and Marked
  • C = total number Captured the second time (with and without a mark)
  • R= number of individuals Recaptured (those with a mark)

Calculating the estimate trout population:

N = (50*40)/4

N = 50

Therefore, the best estimate of the population of trout in the lake is 500 individuals.

The low number of tagged trout recaptured may be because the tags slipped off.

This possibility can be reduced if the student used tags that does not slip off easily.

Learn more about mark and recapture method at: brainly.com/question/10646744

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2 years ago
Which aquatic ecosystem on the map below would have the highest biodiversity?
Keith_Richards [23]
Which is the choosing?
4 0
3 years ago
Part 1- Explain which traits would need to combine in order for a yellow cucumber and a green to make a green cucumber.
adelina 88 [10]
<h2>Part 1.</h2><h2>Answer:</h2>

Only the traits or allele for the green trait will be needed to make a green cucumber.

<h3>Explanation:</h3>

Here in the given example there are two allele responsible for the color of cucumber. One is Y which is dominant allele and codes for the yellow color.

While y is recessive allele and it will be code for the green color.

In case of heterozygous in which the genotype will be Yy but the phenotype will be always yellow because Y is dominant.

In case of genotype yy the phenotype will be green.

So for green cucumber there will be two y in the genotype.

<h2>Part 2.</h2><h2>Answer:</h2>

For yellow cucumber, there is need of only one dominant allele which codes for yellow.

<h3>Explanation:</h3>

According to the given punnet squre, There will be 4 genotypes from the breeding of a yellow cucumber and green cucumber.

The yellow cucumber is heterozygous or homozygous and its genotypes can be Yy and YY relatively.

But for green cucumber the genotype can only be homozygous which is yy.

In the punnet squre the 2 phenotype are yellow and green.

Hence for the yellow cucumber there is only need of one Y allele in genotype.

5 0
3 years ago
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