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Arada [10]
3 years ago
8

A tetrad is composed of

Biology
1 answer:
Georgia [21]3 years ago
8 0
Of 2 sister chromatids. Hope this helps
You might be interested in
Mendel spent years crossing pure bred pea plants together to observe their phenotypes. One consistent pattern he observed is tha
Svetradugi [14.3K]

Answer:

D (purple flower plant is dominant)

Explanation:

Gregor Mendel was regarded as the "Father of Genetics" because of his outstanding contribution to discovering the pattern of inheritance. In his experiments with purebreeding purple and white-flowered plants, he discovered that the F1 offsprings were all purple-flowered.

This observation made him to propose his LAW OF DOMINANCE, which states that one allele of a gene is capable of masking the expression of another in a heterozygous state. In this case of flower colour gene, the allele for purple color (P) is masking the gene of the white colour (p) in a combined state. Hence, purple allele is said to be DOMINANT over white allele.

He discovered that the white allele was being masked when he performed a dihybrid cross i.e. F1 self cross to derive a plant with white flowers.

6 0
3 years ago
What specific part of the brain processes nerve impulses from touch and pain receptors?
pogonyaev
TOuch and pain are controlled by different regions of the brain, so I gonna treat these terms separately:

PAIN: one thing seems certain: there is no single "pain centre" whose only activity could account for all facets of pain. In other words, no lobotomy of any particular region of the brain completely removes the pain. So there are many regions that are responsible for pain: The reticular formation and the thalamus (specifically the Deep lemniscal territory) which is responsible for both touch and pain sensations

TOUCH: touch sensation are processed by parietal lobe in the brain cortex (which is also responsible for sight and hearing), and the deep lemniscal territory in the thalamus.

4 0
4 years ago
A type of collagen that forms a very fine network of fibers in which the stem cells are interspersed is called A. elastin. B. re
Sergeeva-Olga [200]
The answer would be B, reticulin.
5 0
4 years ago
Read 2 more answers
The forelimbs of humans, cats, and bats have a number of detailed similarities in their construction. what best explains these s
Whitepunk [10]
For the answer to the question above, I believe the answer is <span>"The forelimbs are similar because all of these organisms inherited the basic forelimb design from a common ancestor."

We've just evolved from our ancestor.
I hope my answer helped
</span>
3 0
3 years ago
Type of diffusion requires a protein to move particles from high concentration to low concentration?
ivolga24 [154]
This happens naturally, so no proteins are needed.
4 0
3 years ago
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