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Pavel [41]
2 years ago
6

The _________ is a temporary organ that is the site of exchange of oxygen, nutrients, and wastes between the mother and fetus, a

nd the ________ connects the placenta to the embryo
Biology
1 answer:
valentina_108 [34]2 years ago
5 0

"The placenta is a temporary organ that is the site of exchange of oxygen, nutrients, and wastes between the mother and fetus, and the umbilical cord connects the placenta to the embryo."

The term "placenta" refers to the transient vascular organ that is present in mammals and holds the baby to the mother's uterus during pregnancy. A developing newborn receives oxygen and nutrients from this structure. It also cleans the baby's blood of waste materials. Only mammals have a placenta.

The transmission of materials is facilitated by the umbilical cord, which joins the fetus and placenta. The network of blood veins in the uterine wall connects the mother to the placenta. The umbilical cord has a vein and two arteries. It transports waste materials away from the fetus and supplies it with oxygen and nutrition.

To learn more about umbilical cord, pregnancy and placenta here

brainly.com/question/13745834

#SPJ4

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That they are dry and not wet climates
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In what phase of meiosis are tetrads of homologous pairs lined up along the center of the cell and attached to the spindle fiber
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Metaphase 1 is when <span>tetrads of homologous pairs lined up along the center of the cell and attached to the spindle fibers in meiosis. Hope I helped!</span>
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HELLPP! ITS BIOLOGY
larisa [96]

Answer:

So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.

Explanation:

In guinea pigs, for the characteristic<u> hair length, short hair is the dominant allele and long hair is the recessive one</u>.

In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:

P: <u>Ss X Ss </u>

<em>Alleles     S     s </em>

<em>S             SS   Ss </em>

<em>s             Ss    ss </em>

Where the offspring is:

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According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.

8 0
2 years ago
Large numbers of ribosomes are present in cells that specialize in producing ___________molecules
babunello [35]

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Ribosomes are complex molecules present in all living cells, they are also called organelles. It serves as the site for protein synthesis. They can be gound freely in the cytoplasm or bound to certain organelles like the endoplasmic reticulum. They consist of two major structural components: the small ribosomal subunits, which read the mRNA, and the large subunits, which join amino acids to form a polypeptide chain.

There are 3 types of Ribosomes which are:

• Ribosomes link amino acids together in the order specified by messenger RNA (mRNA).

• Each unit also consist of ribosomal RNA (rRNA) molecules and a variety of ribosomal proteins.

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3 years ago
Theophrastus was considered the "Father of Botany" in the approximate year _____.
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<span>300BC was the approximate year.

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