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kirza4 [7]
3 years ago
6

Ovulation typically occurs ________ days before the menstrual period begins. question 90 options: 7 10 20 14

Biology
2 answers:
Amanda [17]3 years ago
8 0
It occurs 14 days before the menstrual s
cycle
castortr0y [4]3 years ago
6 0

The correct answer is D. 14

Explanation

Ovulation is a phase of the menstrual cycle that occurs on day 14 of the menstrual cycle. This means the evolution occurs in the middle of the menstrual cycle that lasts 28 days and due to this, it occurs14 days after the first day of menstruation and 14 before the beginning of next menstruation. In this phase, the ovule or egg completes its maturation and is transferred to the uterus through the fallopian tubes. Additionally, the uterus is covered and prepared for a pregnancy, this makes the woman be in the most fertile phase to get pregnant; also this phase accompanied by high hormonal levels. So, the correct answer is D. 14

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See the answer below

Explanation:

Let the disorder be represented by the allele a.

Since the disease is an autosomal recessive one, affected individuals will have the genotype aa and normal individuals will have the genotype Aa or AA.

Since the four adults are carriers, their genotypes would be Aa.

                    Aa     x     Aa

Progeny:    AA    2Aa    aa

Probability of being affected = 1/4

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(b) The chance that  the third child of Sara and James will be free of the condition = 3/4

(c)

(d) If someone has no family history of the disorder, their genotype would be AA.

                 AA     x     aa

                        4 Aa

<em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history </em>= 0

(e)

(f) <em>The chance that a child with alkaptonuria will have an offspring with alkaptonuria if the child's mate has no family history</em> = 0

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