If the ovum of Drosophila with AXX is fertilised by a sperm with AX it will result in (A) Intersex (B) Triploid female (C) Meta male (D) Meta female

Morgan (1910) made the following crosses in Drosophila. Write the results of these crosses in F_(1) generation. (a) The white eyed male was crossed with red eyed female. (b) The females of F_(1) generation were crossed with white eyed males. (c) White eyed females were crossed with red eyed males.

Gibberellins promote the production of (a) male flowers (b) female flower (c) neutral flowers (d) abscission layer

Fertilization is the process of (A) transfer of male gamete to female gamete (B) fusion of nuclei of male and female gamete. (C) adhesion of male and female reproductive organs. (D) formation of gametes by a reproductive organ.

In Drosophila crossing over occurs in female but not in male. Gene A and B are 10 map unit apart on chromsome. A female Drosphila with genotype (AB)/(ab). and male Desphila with genotype (AB)/(ab). How many type of gametes are produced by female and male Droaphila respectively

Read the following statements and find out the incorrec statements. a. Barrier methods are available for both males and females. b. In barrier methods, ovum and sperms are prevented from physically meeting with the help of barriers. c. Condoms are made of thin rubber/latex sheath that are used to cuver the penis in male or vagina and cervix in the female, just before coitus so that the ejaculated semen would not enter into the female reproductive tract. d. Both the male and the female condoms are reusable, can be self-inserted and thereby gives privacy to the user. e. Disphragms, cervical caps and vaults are barriers made of rubber that are inserted into the female reproductive tract to cover cervix during coitus. These barriers are disposable.

The bar graph shows the total number of male and female lives in four different towns and table shows the number of males and females whose ages are above 40 years. Read the data carefully and answer the questions below: Find the ratio of the those number of males and females whose ages are above 40 years in town A and B to those males and females whose ages are below and equals to 40 years in town D.