Mammalian fertilization comprises sperm migration through the female reproductive tract, biochemical and morphological changes to sperm, and sperm-egg interaction in the oviduct. Recent gene knockout approaches in mice have revealed that many factors previously considered important for fertilization are largely dispensable, or if they are essential, they have an unexpected function. These results indicate that what has been observed in in vitro fertilization (IVF) differs significantly from what occurs during “physiological” fertilization. This Review focuses on the advantages of studying fertilization using gene-manipulated animals and highlights an emerging molecular mechanism of mammalian fertilization.
Answer: The correct answer for the fill in the blank is High.
Hypotonic solution is the one, which contains less concentration of solute (like salt) as compared to the solvent (water).
In other words, in a hypotonic solution, the concentration of solvent is higher than the concentration of solutes.
Thus, the relative concentration of water ( which is a solvent) in a hypotonic solution is high.
The photoreceptors would be your eyes, chemoreceptors skin, olfactory for nose and mechanoreceptors for obviously tongue hope this helps.
Answer:
D
Explanation:D Sorry if I'm wrong!