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Answer:
<h2>E. normal roosters & hens and bald roosters & hens.</h2>
Explanation:
The sex chromosomes of the chickens are represented by ZZ for male chicken that is rooster and ZW for the female chicken that is hen.
In the given question, the genotype of the bald rooster is zz and the genotype of the normal hen is ZW.
So the F1 progeny are, Zz that is normal male and the zW that is bald female.
So F1 × F1
Zz × zW
Thus, F2 progeny are Zz ( normal rooster), zz ( bald rooster), ZW ( normal hen), zW ( bald hen).
The cell membrane is also called selectively permeable membrane for the sole reason being it is selective in nature.
It forms a physical barrier and as a barrier between the cell and the external environment as it allows only selected necessary molecules to pass through it and at the same time prevents entry of unwanted / unnecessary substances.
It also regulates the entry and exit of molecules into and out of the cell.
The cell membrane permits the entry of vital molecules like
<span>water, oxygen, amino acids and glucose into the cell as they are crucial for various life processes and at the same time metabolic waste products are expelled through the cell membrane.</span>
Environmental Science is a science that uses the disciplines of Oceanography, Meteorology, Geology, and Astronomy.
