In human child, sex is determined by

1. Size and number of sperms in semen

2. Size of egg to be fertilized

3. Sex chromosomes of father

4. Sex chromosomes of mother

Round seed trait (R) is dominant over wrinkled (r) seed trait in Pea. Heterozygous round seeded plant (Rr) is crossed with wrinkled seed plant (rr). What is the possible progeny?

1. 302 round : 102 wrinkled

2. 210 round : 95 wrinkled

3. 103 round : 99 wrinkled

4. 103 round : 315 wrinkled