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Phantasy [73]
3 years ago
7

Explain why two siblings except identical twins have the exactly the same alleles

Biology
1 answer:
Natali [406]3 years ago
5 0

Answer:

having exactly the same DNA sequences, twins start accumulating genetic variation from the earliest stages of development, researchers at Iceland-based company deCODE genetics found, meaning that one twin harbors variants that aren't present in the other.

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Why is carbon essential to all known life on Earth?
ser-zykov [4K]
Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.
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2 years ago
The specialized cells in the nervous system that serve to conduct a signal are known as ___.
sdas [7]

Answer: Neurone

Explanation:

Neurone is also known as nerve cell. It is the basic unit of the nervous system, and helps to transmits/ conducts nerve impulses from the brain to the body or vice versa.

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3 years ago
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When plants that are heterozygous for round seeds are crossed, what is the probability that the offspring will have wrinkled
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<u><em>If wrinkled seeds are dominant, it is a 75% chance, if round seeds are dominant, it is a 25% chance. In this case it's probably 25%, considering round seeds are emphasized.</em></u>

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In cells where telomerase is normally inactive, it can become active by accident and often, cancer will develop as a result. Can
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Answer:

Cancer cells achieve proliferative immortality by activating or upregulating the normally silent human TERT gene (hTERT) that encodes telomerase, a protein with reverse transcriptase activity that complexes with other proteins and a functional RNA (encoded by hTR, also called hTERC) to make a ribonucleoprotein enzyme.

Explanation:

A rare cell that escapes crisis almost universally does so by reactivating telomerase and this cell can now become a cancer cell with limitless potential to divide. Almost all cancer cells have short telomeres and thus inhibitors of telomerase should drive such cancer cells into apoptotic cell death. Yet, each time a cell divides, the telomeres get shorter. When they get too short, the cell no longer can divide and becomes inactive or "senescent" or dies. This process is associated with aging, cancer, and a higher risk of death.

∠(-ω-)√

4 0
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Answer:

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if he says no

then no

Explanation:

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