Hi,
The answer should be letter B, as H2O is a compound made of two different elements in a definite proportion.
<span>In Drosophila + indicates wild-type allele for any gene, m is mahogany and e is ebony.
Female parents are m+/m+ and males are +e/+e.
F1 are m+/+e, all wild type. F1 females are crossed with me/me males - the test cross.
Offspring will be : non recombinant m+/me, mahogany wild type or +e/me wild type ebony. OR
recombinant me/me mahogany ebony or ++/++ wild type.
As the two genes are 25 map units apart, the percentage of recombinants will be 25% and therefore percentage parental types will be 75%.
75% 1000 is 750. There are two parental types, so you would expect 375 of each. Therefore, you would expect 375 m+/me and 375 +e/me.
25% of 1000 is 250 split between two recombinants =125 of each. Therefore you would expect 135 me/me and 125 ++/++</span>
The organelles that produce proteins used within the cell are the ribosomes.
Final answer: Ribosomes.
Punnet squares are your friend with these kinds of questions :)
<u> A | a |</u>
A <u>| AA | Aa |</u>
a <u>| Aa | aa |</u>
Now we can easily see that 1/4 of the offspring will be AA, 1/2 will be Aa, and 1/4 will be aa. Therefore, it is the third answer that's correct (1/4 AA, 1/2 Aa, 1/4 aa). Hope this helps! :)
<span>Located down within the foot, the calcaneus is better known as the heel bone. It is situated in the back of the foot and it is here, in the calcaneal region that it is the only visible on the dorsal body surface.</span>
