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3 years ago

How might a scientist determine whether a trait is sesx linked by observing the offspring of several genetic crosses?

Biology

1 answer:

Tomtit [17]3 years ago

4 0

Answer:

By checking the proportion of those affected by the trait in relation to gender within the population of the offspring

Explanation:

If a trait is sex linked, such trait will be found more in the male sex compared to the female sex within the population.

The male has XY chromosome and as such only needs a copy of the affected allele in order to be affected for the trait. A female has XX chromosome and as such needs two copies of the affected alleles in order to be affected for the trait.

Hence, the proportion of affected male always outweigh the proportion of affected female in a population as far as sex-linked trait is concerned.

Consequently, a scientist might be able to determine whether a trait is sex-linked by observing the proportion of male to female affected by the trait within the offspring's population.

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Water is what type of Molecule

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Answer:

polar

Explanation:

water is polar molecule

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3 years ago

Cells from advanced malignant tumors often have very abnormal chromosomes as well as an abnormal number of chromosomes. What mig

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Answer:

Option- D: Is the best choice to choose from the given options.

Now, let us explain the term Cell cycle in a more comprehensive way.

As the cell cycle is controlled at three checkpoints.

The integrity of the DNA is assessed at the G₁ checkpoint.

Proper chromosome duplication is assessed at the G₂ checkpoint.
Attachment of each kinetochore to a spindle fiber is assessed at the M checkpoint.

Explanation:

The cell cycle is controlled by three internal checkpoints that evaluate the condition of the genetic information.

The G₁ Checkpoint:This stage determines whether all conditions are favorable for cell division to proceed. The cell can halt the cycle and attempt to remedy the problematic condition, or the cell can advance into G₀ (inactive) phase and await further signals when conditions improve.
The G₂ Checkpoint: The most important role of the G₂ checkpoint is to ensure that all of the chromosomes have been accurately replicated without mistakes or damage.
The M Checkpoint:It occurs near the end of the meta-phase stage of mitosis. it determines whether all the sister chromatids are correctly attached to the spindle micro-tubules

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3 years ago

Stem cells can divide indefinitely and can produce different types of cells, as shown in the model here. A student wants to revi

Vinil7 [7]

Answer:

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Explanation:

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3 years ago

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dezoksy [38]

Answer:

Your answer is 75%

Explanation:

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2 years ago