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Virty [35]
3 years ago
11

The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded is:

Biology
1 answer:
forsale [732]3 years ago
8 0

Answer:

Elastin          

Explanation:

The elastin is defined as an extracellular matrix protein which lends to the elasticity and also resilience to the tissues such as the lungs, skin, arteries,  tendons, and the ligaments.

Elastin synthesized from precursor molecule named tropoelastin.

Elastin is the fibrous protein which gives the skin its flexibility and also helps the skin regain its shape.

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During meiosis homologous chromosomes often twist around each other break exchange segments and rejoin this process usually cont
Annette [7]

Explanation:

Crossing over, or genetic recombination contributes to genetic variation and diversity.

In early Prophase I of meiosis, crossing over occurs. This is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined. The chromosome pairs form tetrads held together at chiasmata.

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained. Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.

During the process of prophase I one the nuclear envelope containing chromosomes has only partly broken down homologous chromosomes are joined together by proteins and a complex or pairing call synapsis- corresponding genes on chromatids are aligned precisely. The syanpsis allows for crossing over which is the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.

Crossing over contributes to genetic variation and diversity; novel gene combinations in gametes are formed, which are not present in parent chromosomes. Genetic diversity describes all the genetic characteristics or traits within a species.

Learn more about mitosis at brainly.com/question/4303192

#LearnWithBrainly

6 0
3 years ago
What are some facts about fertilization?
Shkiper50 [21]

Answer:

Internal Fertilization: Mammals,birds and reptiles in them the mode of fertilization is internal

External Fertilization: Amphibians and fishes used external fertilization.

Egg laying Animals;Birds,reptiles and some mammals platypus lays eggs.

Explanation:

Fertilization is a process in which a female egg (Ovum) and male egg (sperm) unite to form a zygote.A zygote is a fertilized egg which grows within an embryo.The process of fertilization is important in eukaryotes such as animals, humans,birds and plants. Fertilization divides a cell into many daughter cells by the process of mitosis and meiosis.It doubles the chromosome numbers.Fertilization are of two types internal and external.

8 0
3 years ago
Why do we call the clavicle as the beauty bone?
nata0808 [166]
Clavicle is also called as collar bone.These are the long bones which connects the arm to the case of the body.it keeps the arm to move freely.
therefore,
Clavicle is called as the beauty bone.
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5 0
3 years ago
Positive feedback
choli [55]

Answer:

B)

Explanation:

"Positive feedback encourages and intensifies a change in the body's physiological condition, driving it farther out if the normal range."

4 0
3 years ago
How does increased sediment loads adversely affect coral reefs?
Ratling [72]
D sediment lowers oceanic ph
7 0
3 years ago
Read 2 more answers
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