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zalisa [80]
3 years ago
14

What is the significance of chromosomes crossing over during the prophase stage of meiosis?

Biology
1 answer:
Fittoniya [83]3 years ago
7 0
Well, when chromosomes cross over during prophase 1 of meiosis, the homologous pair of chromosomes exchange segments of DNA which happen to be the genes. So the significance of crossing-over during prophase 1 is that it adds genetic variation to sexually reproducing organisms.
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Where does first pass metabolism occur? / what route of administration is used to avoid complete first pass metabolism?
snow_tiger [21]
First pass metabolism of a drug is said to occur when the concentration of a drug that is administered orally is significantly reduced before it reaches the systemic circulation. 
First pass metabolism usually occur in the liver.
The routes of drug administration that avoid complete first pass metabolism are: sublingual, transdermal, rectal and inhalation. 
7 0
3 years ago
The process that transports solutes, including many drugs, into the tubular fluid is called
Serggg [28]

The process that transports solutes, including many drugs, into the tubular fluid is called tubular secretion. Under this process, there is transfer of materials from peritubular capillaries to the renal tubular lumen and the secretion is caused mainly by active transport and passive diffusion.






8 0
3 years ago
A method to trace the inheritance of a trait over many generations is called a
tia_tia [17]

Answer:

Pedigree.

Explanation:

Pedigree analysis may be defined as the the method to determnine the family history of a particular trait. The pedigree is important to determine the disease and its inheritance pattern.

The pedigree allows the trace of the inheritance of a particular trait over several generations. The pedigree analysis determines the individual as a carrier of the trait.

Thus, the correct answer is option (B).

4 0
3 years ago
Which is the oldest rock in this strata?
Shkiper50 [21]

Answer:

I am 100% sure it is the mudstone. I believe they are the oldest rock in existence.

Explanation:

8 0
2 years ago
Read 2 more answers
Most primates have
Black_prince [1.1K]

Answer:

b. nails instead of claws on their fingers and toes

Explanation:

Primates are a class of mammals in which humans are included. It is a very varied group, ranging from 30 gram lemurs to over 200 kg gorillas.

This group of animals is characterized, among other things, by having five fingers at its ends. They have clavicle, binocular vision, orbits surrounded by bone, etc. The vast majority have nails instead of claws, opposing thumb and vision that captures all colors.

Unfortunately, it is a very threatened order, as 60% of the world's primates could disappear within 25 years. This is all the fault of one species: the human.

7 0
3 years ago
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