If human sperm and eggs were produced by mitosis instead of meiosis, they would be diploid cells, possibly resulting in a zygote with an excess of chromosomes. This imbalance could lead to nonviable offspring and developmental complications, as necessary components for early development are only present in the egg cell.
Currently, human sperm and eggs are produced by the process of
meiosis
, which results in
haploid cells
that contain half the number of chromosomes as the parent cell. If, hypothetically, sperm and eggs were produced by mitosis, they would be
diploid cells
with a full set of chromosomes similar to normal body cells. With such a change, sexual reproduction, as we understand it, could not occur, as the fertilization event would result in a zygote with four sets of chromosomes, creating a significant imbalance in genetic material. This could potentially lead to numerous complications and abnormalities in the offspring, likely making them nonviable. Additionally, critical components necessary for early development are present in the cytoplasm of the egg cell, without which, no subsequent development would occur. In conclusion, the production of sperm and egg cells via mitosis instead of meiosis would fundamentally alter human reproduction and could potentially lead to severe problems in offspring development.
#SPJ3
The protons and neutrons are much more massive than the electrons.
Electrons have a negative charge.
Electrons are located outside the nucleus.
Answer:
The correct answer is d = Electrons are outside the nucleus.
Explanation:
Hello ! Let's solve this!
The mass of the atom is measured as the number of protons and neutrons in the nucleus of an atom.
Since electrons are outside the nucleus, they are not counted to know the mass.
The correct answer is d = Electrons are outside the nucleus.
Muscle tone is a state of sustained partial contraction (option D).
Muscle tone in physiology is the continuous and passive partial contraction of the muscles, which helps maintain posture.
Muscle tone aids in holding our bodies upright when sitting and standing. These changes in muscletone are what enable us to move.
For example, if someone took the arm and quickly straightened your elbow, the biceps muscle would automatically and quickly respond and contract in response to protect from injury.
Therefore, option D is correct.
Learn more about muscle tone at: brainly.com/question/32267212
#SPJ6
Answer:
D is the correct answer
restaurant.
menu.
order .
giant star
sun
supernova