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Harman [31]
3 years ago
8

4. Providing examples, explain how sexual reproduction in PLANTS HAS EVOLVED TO BECOME LESS DEPENDENT ON WATER.

Biology
1 answer:
Dmitrij [34]3 years ago
8 0
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Use a Punnett square diagram to show why, for each pregnancy, the chances of giving birth to either a boy or a girl are 50-50. E
ikadub [295]

Answer:

Because the offspring of a male and female are always going to be xx, xx, xy, or xy.

Explanation:

Remember that men have different reproductive chromesomes than women. Women have 2 x chromesomes(xx) while men have 1 x and 1 y(xy). These are given down to their offspring.

So we can write the this out in a punnet square as(link down below).

After you see the visual, you will find that the genotypes are xx, xx, xy, xy.

As I said above, women have sex chromesomes xx, while men have sex chromesomes xy. When you match the genotypes on the punnet square with the ones we know from men and women, we find that two of them match with men and two match with female.

So with this, we can conclude that 2/4 of offspring will always be male and 2 will be female. And as you well know 2/4 is 1/2 which is 50%.

3 0
3 years ago
A biologist working in a lab adds a compound to a solution that contains an enzyme and substrate. This particular compound binds
tigry1 [53]

Answer:

The correct answer is C) The compound is an allosteric inhibitor.

Explanation:

An inhibitor works in many ways, but this particular one binds to the allosteric site in the enzyme causing a decrease of the enzymatic activity. When this situation happens, the inhibitor doesn't bind to the active site, but it changes the enzyme's shape so it cannot work properly anymore.

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PLEASE HELP ME !!!
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