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Vika [28.1K]
3 years ago
13

I've answered this question about 28 times and cant get it right can i get some halp please ill give brainiest! :)

Biology
2 answers:
Valentin [98]3 years ago
7 0
Where is it? The question
sesenic [268]3 years ago
6 0
Actually, you didn’t provide any image or information on the question so can you please do that?
Thanks.
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What is a drug found in tobacco that speeds up heartbeat? * 5 points?
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The drugs that are found are <span>Tar, </span><span>Carbon monoxide,</span><span> Nicotine and</span><span>Emphysema </span>
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Which molecular substance is found on the surface of pathogens that can be detected by leukocytes to launch an immune response?
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I’m pretty sure the answer is Antigens
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Which of the following methods could be used to determine the influence of cell position on differentiation during embryological
solmaris [256]

Answer: Reverse the position of two cells from opposite poles as the blastula stage allow development

Explanation:

An experiment should be performed, this experiment will help to discover the interactivity that exists between cells before reaching the fetal period. The experiment ought to also influence the location of the cells.

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How does life on earth change over time
Troyanec [42]

Answer:

From the time of origin of life on earth has chaged many ways. The earth has also changed from the time of its origin. Both lives on earth itself are dynamic.

Different geolgical phenomena such as volcanic erruptions, tectonic movement etc., have changed the configurations of continents. These changed environment of the continents have affected the lives on the earth.

The Earth is 4.8 billion years old, while the origin of life on the earth is 3.5 billion years old. Gradually these changes have given the chaces of variations, from which the suitable organisms are selected on the earth.

Explanation:

3 0
3 years ago
Read 2 more answers
Achondroplasia is a form of dwarfism inherited as a completely dominant trait. Two achondroplastic dwarfs have a dwarf child; la
yulyashka [42]

Answer:

There's 25% probability that their next child will be normal, and 75% of it being a dwarf.

Explanation:

Achondroplasia (A) is a dominant trait.

Two achondroplastic dwarfs (A_ x A_) have a dwarf child (A_) and a normal child (aa). The second child must be aa because if it had a dominant allele it would also be dwarf.

The only way for two achondroplastic parents to have a normal child is that <u>they are both heterozygous (Aa) for this gene.</u>

The cross Aa x Aa would produce the following offspring probabilities:

  • 1/4 AA - dwarf
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  • 1/4 aa - normal

So there's 1/4=25% probability that their next child will be normal, and 3/4=75% of it being a dwarf.

7 0
3 years ago
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