In an experiment to show co-dominance, cows with white fur (W) were crossed with bulls with red fur (R). All the offspring of the F1-generation have roan fur (RW). A roan fur consists of patches of white and patches of red fur. Roan cows and roan bulls were crossed and the results are given below.

\begin{tabular}{|l|c|c|c|} \hline Genotype & RR & RW & WW \\ \hline Number of offspring & 120 & 240 & 120 \\ \hline \end{tabular}

QUESTION 32
A) Give the ratio of the different phenotypes shown in the table.

B) Explain why the cows and bulls with genotype RW have roan fur and not only red or only white fur.

There are some reasons how Mercury got its frozen ice. It is very possible for Planet Mercury to have frozen ice because it has no atmosphere which means, it can’t trap heat. As the said planet orbits the sun, some of its areas within deep craters do not receive direct sunlight. These cold areas have been steady for up to billions of years which allowed the earliest ice to be deposited and preserved despite the said planet’s proximity to the sun. The ice also may have been brought to the planet by some comets falling from the outer space of the solar system.

Answered by taskmasters | 2024-06-10

There is a slight possibility, just not on the surface. It is too close to the sun for it to have ice. However, in the core there might be some, most likely not.

Answered by Anonymous | 2024-06-10

Mercury can have frozen ice due to its lack of atmosphere and extreme temperature variations, with cold areas in craters remaining permanently shaded from sunlight. These craters preserve ice for billions of years despite the planet's proximity to the Sun. Additionally, some ice may have come from comet impacts.
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Answered by taskmasters | 2024-12-26