Question

Q.3 Answer the following question in detail:
(14) Explain the sex determination of a baby in human brings.
(15) Draw the figure of human ear. Explain the structure and function of human ear.​

Answer 1

Answer:

14.

Sex of child in humans is determined by the type of male haploid gamete that fuses with the female egg. ... So if the male gamete with the X chromosome fuses with the female egg, the child will be female and if the male gamete with the Y chromosome fuses with the female egg, the child will be male.

answer 15. The function of the outer ear is to collect sound waves and guide them to the tympanic membrane. The middle ear is a narrow air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bones—the malleus (hammer), incus (anvil), and stapes (stirrup), collectively called the auditory ossicles.