Males generally have _____ and______ vocal cords that produce a deeper, low pitch sound in comparison with females.

FSH and LH are the hormones released by both female and male. a. Which organs produce these hormones? b. Mention the effects of these hormones in male and female.

An electrically maintained tuning fork vibrates with constant frequency and constant amplitude. If the temperature of the surrounding air increases but pressure remains constant, the sound produced will have

An aluminium rod having a length of 90.0 cm is clamped at its middle point and is set into longitudinal vibrations by stroking it with a rosined cloth. Assume that the rod vibrates in its fundmental mode of vibration. The density of aluminium is 2600 kgm^-3 and its Young's modulus is 7.80xx10^10 Nm^-2 . Find a. The speed of sound in aluminium, b. The wavelength of sound waves produced in the rod. c. The frequency of the sound produced and d. The wavelength of the sound produced in air. Take the speed of sound in air to be 340 ms^-1 .

A cow with red coat is crossed with a bull having white coat. Their offspring produced in F_(1) generation showed roan coat. This effect is produced due to juxtaposition of small patches of red and white colour. What can be assumed about the gene controlling coat colour in cattle ?

A bacterial cell was transformed with a recombinant DNA that was generated using a human gene. However, the transformed cells did not produce the desired protein. Reason could be (a) Human gene may have intron which bacteria cannot process (b) Amino acid codons for humans and bacteria are different (c) Human protein is formed but degraded by bacteria (d) all of the above

Male and female have equal number of autosomes.

Which method do you suggest the couple to have a baby, if the male partner fails to inseminate the female or due to very low sperm count in the ejaculate?

Fill in the blanks in the following statements by selecting the correct option. (i) All hybrids of poultry are produced by ______ inbred stocks. (ii) Super hybrids are obtained when genetically parents are used in the cross. (iii) A_______ is produced from a cross between female horse (mare) and male donkey.

If a flute sounds a note with 450 Hz , what are the frequencies of the second , third , and fourth harmonics of this pitch ? If the clarinet sounds with a same note as 450 Hz , then what are the frequencies of the lowest three harmonics produced ?