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Svet_ta [14]
4 years ago
10

What's the main purpose of the placenta

Biology
1 answer:
svetlana [45]4 years ago
4 0
The main purpose of the placenta is to give the nutrition that the fetus needs from the mother. The blood of the mother that contains all the nutritious needs pass through the placenta, then through the umbilical cord before reaching the baby.
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What bone was in the spinal cord
patriot [66]

Answer:

Vertebrae

Explanation:

The spine has 33 stacked vertebrae (small bones) that form the spinal canal. The spinal canal is a tunnel that houses the spinal cord and nerves, protecting them from injury. Most vertebrae move to allow for a range of motion. The lowest vertebrae (sacrum and coccyx) are fused together and don't move

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7 0
3 years ago
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What is the probability that mary and justin will have an affected child?
NISA [10]

Answer:

The correct answer would be 1/32

Explanation:

Mary and Justin can have affected child only when both of them are carriers that is, both of them should be Gg.

The probability of Justin's father to be a carrier is 2/4 or 1/2 [1 GG: 2Gg: 1gg].

Similarly, the probability of Jean to be a carrier would be 1/2.

Thus, the probability of Justin and his father to be a carrier would be equal to 1/2*1/2 ⇒ 1/4.

The probability of Mary to be a carrier = 1/2.

So, the probability of Mary and Justin to be the carrier of the disease would be 1/2*1/4 = 1/8.

Now, the probability of having an affected child would be 1/4 as it is a recessive disorder.

So, the probability of Mary and Justin to have an affected child = 1/4 * 1/8 ⇒ 1/32

6 0
4 years ago
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The continents began to drift apart by the end of the _______ period.
hammer [34]
<span>a. Cretaceous


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5 0
3 years ago
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How sexual reproduction increases genetic diversity in many species of plants and animals
Dafna11 [192]




Sexual reproduction is a process involving the fusion of two gametes to


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7 0
3 years ago
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The techniques earthquake is a term which refers to the science of constructing buildings that are able to withstand the effects of an earthquake. 

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The Intensity Scale is a scale that measures the intensity of an earthquake. It also measures the effects of an earthquake.


6 0
4 years ago
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