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garri49 [273]
3 years ago
14

Please if you are good with solving genetic problem. I will mark you as brainliest.

Biology
1 answer:
Nesterboy [21]3 years ago
6 0
Close to the correct answer on this one.. You have the correct ratios but the question is asking for genotype ratio which is the letter representations BB, Bb, bb. Phenotype is the visible physical traits like yellow, blue, green.

answer
1 BB: 2 Bb : 1 bb

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Which of the cell junctions is involved in creating a barrier between cells?
aleksklad [387]

Tight junctions are cell junctions that seal tissues. These junctions form protective and functional barriers.

  • The cell junction that is involved in creating a barrier between cells is the TIGHT junction.

  • The tight junctions are cell-cell adhesion structures implicated in cell polarity and signaling.

  • On the other hand, adherens junctions are cell junctions required for maintaining contact inhibition.

  • Finally, desmosomes are intercellular junctions that bind intermediate filaments of the cytoskeleton with cadherin proteins.

Learn more in:

brainly.com/question/13605066?referrer=searchResults

6 0
2 years ago
If you cant prove a hypothesis, then how do scientist learn?
bearhunter [10]
Hypotheses must be provable. If scientists cannot prove a "hypothesis" right or wrong, they need to change it to a legitimate hypothesis - something you can prove.

If it is proven wrong, they can change certain aspects of it to make a more specific experiment.
5 0
2 years ago
Read 2 more answers
How can you test the idea that solar energy is required for the reduction of NADP+ to NADPH?
AysviL [449]

Answer:

In addition to biology, evidence drawn from many different disciplines, including chemistry, geology, and mathematics, supports models of the origin of life on Earth. In order to determine when the first forms of life likely formed, the rate of radioactive decay can be used to determine the age of the oldest rocks (see optional problems C and D, below) exposed on Earth’s surface. These are found to be approximately 3.5 billion years old. The age of rocks can be correlated to fossils of the earliest forms of life. A. The graph compares times of divergence from the last common ancestor based on the fossil record with a "molecular time" constructed by comparing sequences of conserved proteins to determine a mutation rate (after Hedges and Kumar, Trends in Genetics, 2003). Explain how such a molecular clock could be refined to infer time or the evolution of prokaryotes. B. Using a molecular clock constructed from 32 conserved proteins, Hedges and colleagues (Battistuzzi et al., BMC Evol. Biol. 2004) estimated the times during which key biological processes evolved. A diagram based on their work is shown. Connect the time of the origin of life inferred from this diagram with the age of the oldest fossil stromatolites and the age of the oldest exposed rock to show how evidence from different scientific disciplines provides support for the concept of evolution. Evaluate the legitimacy of claims drawn from these different disciplines (biology, geology, and mathematics) regarding the origin of life on Earth. The oldest known rocks are exposed at three locations: Greenland, Australia, and Swaziland. The following application of mathematical methods provides essential evidence of the minimum age of Earth.

Explanation:

6 0
2 years ago
The mutagens that result in cancer damage DNA by
Vsevolod [243]
Causes errors in Dna replication
6 0
3 years ago
Read 2 more answers
Can somebody help me please. thanks
Grace [21]
Claim: No tools to discover the impending Cell Theory.

Reasoning:
Schleiden and Schwann, as well as Virchow, are generally seen as the founders of the cell theory, due to their pioneering scientific work in the 1800s. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

Evidence: The cell theory has many complexities and is of importance due to its affect to nearly every aspect of biology, from our comprehension of life & death, managing diseases, cycles and etc. But early scientists had no tools to study cells. They didn't even know about them. It took the invention of the microscope to view them and to begin an understanding of cells.
(Two Dutch spectacle-makers and father-and-son team, Hans and Zacharias Janssen, create the first microscope.) Matthias Schleiden observed that all plants were made of cells from the microscope and Theodor Schwann observed that all animals were also made of cells. Rudolf Virchow observed that cells only come from other cells Virchow saw cells dividing and added that living cells arise only from other living cells. These ideas led to cell theory, which states that all organisms are made of cells, all life functions occur in cells, and all cells come from other cells.
3 0
2 years ago
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