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AfilCa [17]
3 years ago
14

A group of scientists have completed several investigations to gather evidence from fossils about the brachiopod. Which of these

is the most likely outcome of the investigations
Biology
1 answer:
riadik2000 [5.3K]3 years ago
5 0
The fossils based on the brachipod
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When sperm and ovum unite at conception, a(n) __________ results. autosome gamete zygote allele?
frosja888 [35]

Answer;

-Zygote

When sperm and ovum unite at conception, a zygote results.

Explanation;

-Conception occurs when a sperm cell from a fertile man swims up through the vagina and into the uterus of a woman and joins with the woman's egg cell (ovum) as it travels down one of the Fallopian tubes from the ovary to the uterus.

-A zygote is the union of the sperm cell and the ovum. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo.

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3 years ago
What affect do algae blooms have on ocean ecosystems?(1 point) increased underwater plant population decreased carbon dioxide in
Umnica [9.8K]
An algal bloom affects the whole ecosystem. Consequences range from the benign feeding of higher trophic levels, to more harmful effects like blocking sunlight from reaching other organisms, causing a depletion of oxygen levels in the water, and, depending on the organism, secreting toxins into the water.
6 0
3 years ago
Does mRNA model more closely resemble the DNA strand from which it was transcribed?
Bond [772]

Answer: No, mRNA ( messenger RNA) model does not closely resemble the DNA strand from which it is transcribed.

This is because mRNA strand is complementary to the strand of DNA template that is used in its synthesis during the process called transcription. The polarity of DNA template is 3' to 5' whereas that of mRNA transcribed is 5' to 3' that is both the strands have antiparallel polarity.

This is the reason template DNA is referred antisense. mRNA strand more closely resembles the sense strand ( which is complementary strand of DNA template in a double helix).


4 0
3 years ago
Read 2 more answers
What observation did Darwin make that suggested there had been geological changes in earths history
Naya [18.7K]
I think the answer is F<span>ossil shells on top of mountains</span>
4 0
3 years ago
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Based on these images, what can you conclude about the organisms?
Zarrin [17]

Answer:

2)They have similarities in their embryonic stages that don’t exist in their adult forms

4)They all contain a backbone, or spinal column

Explanation:

In the embryonic development of vertebrates during the early stages of development there are great similarities. Vertebrates in the early stages as shown in the image are very similar and subsequently develop the structures of their own species that differentiate them.

The presence of notocorde is a characteristic characteristic of vertebrates and birds, fish, reptile amphibians and mammals have it since they are embryos to adults

6 0
3 years ago
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