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gtnhenbr [62]
2 years ago
9

Is the tube that carries blood, oxygen, and nutrients from the placenta to the developing child?

Biology
1 answer:
Nitella [24]2 years ago
7 0
Umbilical vein transports blood rich in oxygen and nutrients from the placenta to the fetus. The unpaired umbilical vein is a vein present during fetal development and it transports the nutrient- and oxygen-rich blood from the placental villi via the umbilical cord to the embryo. The umbilical vein is connected to the two intraembryonic umbilical veins.
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Assume that the genes for tan body and bare wings are 15 map units apart on chromosome II in Drosophila. If a tan-bodied, bare-w
Fittoniya [83]

Answer:

WILD TYPE= 425;

TAN-BARE= 425;

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BARE= 75

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Fifteen map units apart implies that 15% of the offspring are products of recombination.

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150 offsprings are products of recombination.

100-15 =85%

Therefore, 85% of the offspring are parental.

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The expected number of offsprings that are tanned but have normal wings would be:

Wild type= 50% of 850

0.50 × 850 = 425

Tan-bare= 50% of 850

0.50 × 850 = 425

tan= 50% of 150

0.50×150= 75

Bare= 50% of 150

0.50×150=75

7 0
3 years ago
What is the percent by mass of a solution that contains 10g of H2O in 50 g of solution?
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Answer:

20% H2O

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(10÷50)x100

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