Evolution — BIOLOGY STD 12 Science — Question

Flavr Savr tomato is genetically modified:

1. To reduce its flowering
2. To reduce its ripening rate
3. To reduce its fruiting rate
4. None of the above

Give the name of any two non-albuminuous seeds.

What is founder effect?

Name the enzyme involved in the continuous replication of DNA strand. Mention the polarity of the template strand.

Name two STDs which can be transmitted through contaminated blood.

OR

Name two sexually transmitted diseases that do not specifically affect the reproductive organs.

Why is genetic variation important in the plant Rauwolfia?

Write the importance of cryopreservation in conservation of biodiversity.

What is genetic diversity?

Apart from homologous and analogous organs, which other organs can be used as evidences for organic evolution?

State the stage at which oogonia reach their maximum number.