The word clone comes from which Greek word?

1 answer:

3 0

In 1903, plant physiologist Herbert J. Webber coined the term "clone," from the Greek klon, to refer to the technique of propagating new plants using cuttings, bulbs or buds. Science historian Howard Markel discusses how the term later came to refer to a bevy of genetic manipulations.

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Stem cells are found in the _____ and in ______, which can be found in bone marrow.

guapka [62]

Stem cells are found in tissues and organs

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A human body cell has 46 chromosomes. How many chromosomes does a female egg cell have? A) 23 B) 24 C) 46 D) 48

nalin [4]

23 but when a sperm cell meets the egg the egg gets 23 genes from the mom and 23 from the dad then the baby will have 46 chromosomes all together

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2 years ago

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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. Ductus venosus >> allows oxygenated blood from the placenta to bypass the liver

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

e. Foramen ovale >> 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. Ductus venosus >> ligamentum venosum

4. Ductus arteriosus >> ligamentum arteriosum

5. Foramen ovale >> fossa ovalis

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 ligamentum teres hepatis) 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 ductus venosus 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 ligamentum venosum 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 ductus arteriosus is a fetal artery that connects the aorta to the pulmonary artery. The ligamentum arteriosum is a nonfunctional vestige of the ductus arteriosus, it is attached to the superior surface of the pulmonary trunk. The foramen ovale is an oval-shaped, small, opening in the wall (septum) between the two upper chambers of the heart. The fossa ovalis is a vestige stricture of the foramen ovale of the embryonic heart, which forms a depression in the right atrium of the heart.

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Which region of the Sun has a temperature of about 15 million C?

Firlakuza [10]

The Solar Corona has a temperature of about 15 million degrees.

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Which of the following is not contained in a galaxy?

lorasvet [3.4K]

Answer:

B) the universe