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Firdavs [7]
3 years ago
5

Mary is pregnant with her first child and has recently had genetic testing to determine whether her baby-to-be is growing normal

ly. Among other things, her test results indicate that the twenty-third chromosome pair of her fetus includes one X chromosome and one Y chromosome. This means that:
a. Mary is expecting a girl.
b. Mary is expecting a boy.
c. Mary’s baby will have Down syndrome.
d. Mary’s baby has a 50-50 chance of having Klinefelter syndrome.
Biology
1 answer:
maks197457 [2]3 years ago
8 0

Answer:

b. Mary is expecting a boy.

Explanation:

Sex determination in human follows the XX-XY mechanism wherein the human males have one copy of X and one copy of Y chromosomes as their sex chromosome. So, the human males have a total of 22 pairs of autosomes and one copy of each X and Y chromosomes as the 23rd pair.  

The human females have 22 pairs of autosomes and one pair of X chromosomes as the 23rd pair.  

If the genetic testing shows the presence of one copy of each X and Y chromosomes in the 23rd pair of chromosome in the fetus, the fetus is going to develop into a baby body.  

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Read 2 more answers
B
Oxana [17]

A scientific explanation for a set of observations that can be tested and is written with an "if/then" statement is referred to as hypothesis and is denoted as option B.

<h3>What is Hypothesis?</h3>

This is defined as the proposed explanation for a particular phenomenon before several experiments are conducted by others in different parts of the world to confirm its authenticity.

It employs the use of words such as "if/then" which shows its unproven status which is therefore the reason why it was chosen as the most appropriate choice.

Read more about Hypothesis here brainly.com/question/606806

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6 0
2 years ago
Cell to cell communication is a key component of higher order biological organization and responses. Communication evolved billi
Alexeev081 [22]

Answer:

hello the options to your question is missing below are the options

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Answer : living things respond to their environment ( D )

Explanation:

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5 0
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