Human Reproduction — BIOLOGY STD 12 Science — Question

Why is apple called a false fruit? Which part (s) of the flower forms the fruit ?

Compare the advantages and disadvantages of producing genetically modified crops.

Complete the following table using alphabets (a to k)

DNA triplet 3’ → 5’	mRNA codon 5’ → 3’	Anticodon	Amino acid
a	b	UAC	c
d	UGG	e	Tryptophan
AAG	f	g	h
i	j	GAC	k

Write short notes on Autogamy.

What is corona radiata?

How do surgical procedures prevent conception in humans? Mention the way it is achieved in human males.

Differentiate between male and female heterogamety.

Give the sum total of all the allelic frequencies in a stable population. List any two factors which disturb the stability of a population. How does this disturbance affect the population?

Do you think Mendel’s laws of inheritance would have been different if the characters that he chose were located on the same chromosome.

Comment on the RCH programme of the government to improve the reproductive health of the people