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More Biology Questions
In case of lysogenic viruses, the mode of infection is said to be
Consider the following statements regarding prophase I and choose the correct answer: 1. Progressive condensation and coiling of chromatin fibres occur at Leptonema stage 2. Two homologous chromosomes each derived from one parent during sexual reproduction come together and form pairs during Zygonema stage 3. Crossing over takes place during Diplonema stage 4. The nucleolus and nuclear envelope disappear and a spindle begins to be formed at the end of Diakinesis stage
________ helps the eye to adjust the focal length of the lens.
Blood is carried towards the heart by __________?
A normal metaphase chromosome with a midial centromere is ________?