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Alja [10]
2 years ago
9

Need help!!! asap due in a hour

Biology
1 answer:
iris [78.8K]2 years ago
5 0
You got all of them right if you need help with fourth one I can’t see it
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Uniform region occupies an area based on a homogeneous characteristic, for example, __________.
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A uniform region occupies an area based on a homogeneous characteristic is a true statement. Regions can also be based on ecological features and as well as the location of it region itself.
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What role do other human body systems, such as the digestive system, the integumentary system, and the respiratory system play i
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If you need to prevent waves from eroding a beach, what would you do
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5 0
3 years ago
Read 2 more answers
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%.

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