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olasank [31]
3 years ago
12

During development, an embryo is embedded in the

Biology
1 answer:
Nikolay [14]3 years ago
3 0
The best answer is d. endometrium.

Endometrium is the innermost layer in the Uterus, and it is found in the whole uterus.

For comparison, Cervix is the structure on the "bottom" of the uterus, vagina is below it (outside of the womb) and the ovaries if where the unfertilized eggs are.
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A model of cell division is shown here. A student evaluates the model and makes the claim that the cell division increases genet
loris [4]

Chromosomes exchange genetic material in step 3.

<h3><u>Explanation</u>:</h3>

The meiosis is the type of cell division that takes place for gametogenesis. The meiosis has two phases - meiosis I and meiosis II.

The meiosis I has the events like crossing over and independent assortment which leads to the mixing of genes between homologous chromosome pairs and separation of homologous chromosome pairs. So the two cells that are produced from the meiosis I are genetically different. The step 3 shows the crossing over of prophase 1 of meiosis I. So, it shows the genetic difference between the offsprings and leads to genetic variation.

5 0
3 years ago
Read 2 more answers
What happens when an electrical gradient and a chemical gradient are applying opposite forces to active transport?
Ierofanga [76]

Answer:

Option B, they negate each other

Explanation:

Electrical gradient force is more or less equal to the chemical gradient during an active transport. The number of electron produced during the establishment of chemical gradients, were transferred through the cellular circuit to produce electrical gradient of an equivalent amount in opposite path.

Thus, both electrical and chemical gradient are opposite to each other and hence they negate out each other.

Option B

8 0
2 years ago
The process of DNA replication
Molodets [167]

Answer: Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.

Explanation:

7 0
2 years ago
Why are the seminal vesicles important for human reproduction? A. They allow the sperm to travel to the urethra to be released.
Ksju [112]

Answer:

<u>They produce the materials needed by the sperm to travel to the egg</u>

Explanation:

Seminal vesicles are glands located near the distal end of the vas deferens. They are responsible mainly for the secretion of seminal fluid as the sperm are moved along towards the ejaculatory duct. The seminal fluid contains a substance which stimulates the sperms. The seminal fluid also contains simple sugars e.g. fructose which provide nourishment for the sperms.

5 0
2 years ago
An instrument that causes air to vibrate is classified as a(n) ____________.
WITCHER [35]
Aerophones I think.

oh well brainly want me to type more.
6 0
3 years ago
Read 2 more answers
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