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vlada-n [284]
2 years ago
5

What structure is responsible for separating the chromosomes during Meiosis?

Biology
1 answer:
aliina [53]2 years ago
4 0

Answer:

C

Explanation:

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For each of the following structures, first indicate its function in the fetus; then, note its fate (what happens to it or what
natita [175]

Answer:

1. Functions:

a. Umbilical artery >> carries deoxygenated blood from the fetus to the placenta

b. Umbilical vein >> transports oxygenated blood from the placenta to the fetus

c. <em>Ductus venosus</em> >> allows oxygenated blood from the placenta to bypass the liver

d. <em>Ductus arterious</em> >> allows most of the blood from the right ventricle to bypass the fetus's non-functioning lungs

e.<em> Foramen ovale</em> >> oxygenated blood from the umbilical vein to bypass the pulmonary circulation

2. After the bird:

1. Umbilical artery >> medial umbilical ligament

2. Umbilical vein >> round ligament of the liver

3. <em>Ductus venosus</em>  >> <em>ligamentum venosum</em>

4. <em>Ductus arteriosus</em> >> <em>ligamentum arteriosum</em>

5. <em>Foramen ovale</em> >> <em>fossa ovalis</em>

Explanation:

The umbilical artery is a paired artery localized in the abdominal and pelvic regions, which carries deoxygenated blood from the fetus to the placenta through the umbilical cord. The medial umbilical ligament is the obliterated part of the umbilical artery that arises from the internal iliac arteries. In utero, the umbilical arteries carry waste products back to the placenta, whereas the umbilical vein carries oxygenated blood from the placenta to the fetus. The round ligament of the liver (also known as <em>ligamentum teres hepatis</em>) is a remnant of the umbilical vein that  exists in the embryonic stage, it connects the left lobe of the liver to the umbilicus. The<em> ductus venosus</em> is a slender shunt that allows oxygenated blood from the placenta to bypass the liver, it connects the intra-hepatic portion of the umbilical vein to the inferior vena cava. The <em>ligamentum venosum</em> is an extrahepatic, slender, and fibrous remnant of the fetal ductus venosus that travels between the left portal vein and the inferior vena cava. The <em>ductus arteriosus</em> is a fetal artery that connects the aorta to the pulmonary artery. The <em>ligamentum arteriosum</em> is a nonfunctional vestige of the <em>ductus arteriosus, </em>it is attached to the superior surface of the pulmonary trunk. The <em>foramen ovale</em> is an oval-shaped, small, opening in the wall (<em>septum</em>) between the two upper chambers of the heart. The <em>fossa ovalis</em> is a vestige stricture of the foramen ovale of the embryonic heart, which forms a depression in the right atrium of the heart.

6 0
3 years ago
____________from the Sun is not matter, although you can see it.<br><br> Fill in the blank
andre [41]

Answer:

Rays

Explanation:

I think the answer is rays. You can see rays shooting from the sky, but it isn't matter because it doesn't have weight, only the sun does. Hope this helps!

6 0
3 years ago
Read 2 more answers
List the advantages and disadvantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersi
expeople1 [14]
Persistent chlorinated hydrocarbon pesticides persist in the environment and accumulate in the foods chain causing harmful effects on the environment including posing a threat to humans health in the long term. Nonpersistent organophosphate pesticides are more toxic than the former but degrade after a short life span. Therefore they cause immediate harm in case one is in contact with them.
The fact that they do not accumulate in the environment, they are more favourable than chlorinated hydrocarbon pesticides. Chlorinated hydrocarbon pesticides will affect several generations due to their accumulation in the environment. However they don't need to be re-applied hence are less expensive
3 0
3 years ago
Form a Hypothesis: As the map shows, the sickle cell allele is not found in African populations that are native to southern Afri
kati45 [8]

A hypothesis for this observation might be that malaria is not endemic to southern Africa. It is a plausible explanation of a given scientific question.

<h3>Hypothesis and scientific method</h3>

A hypothesis is a plausible explanation of an observation of the natural world, which must be tested by using the scientific method.

Testing a hypothesis involves performing additional observational and/or experimental procedures in order to confirm or reject this assumption.

In this case, the sickle cell allele is found in high frequency in regions where malaria is endemic.

Learn more about hypotheses here:

brainly.com/question/11555274

6 0
2 years ago
Write a hypothesis about the effect of the red light on the population of light red walking beans. Use the "if . . . then . . .
PtichkaEL [24]
If red light is shined on a population of red walking beans then they would not be as red as when started because they need light to survive and red light is present but they reflect it until they need it to survive.

Mutations that naturally occur can change phenotype and if it is beneficial to the species then it will be past on if it is no then it will die before passing it on.
4 1
3 years ago
Read 2 more answers
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