Biology Past Questions and Answers

In an experiment, a red-flowered plant was crossed with another red-flowered plant and the following results were obtained: 448 red flowers and 154 white flowers in the F₁ generation.
Which of the following represents the phenotypic ratio of the above genetic cross?

In an experiment, a red-flowered plant was crossed with another red-flowered plant and the following results were obtained: 448 red flowers and 154 white flowers in the F₁ generation.Which of the following represents the genotypes of the parents if R is for red gene and r for white gene?

In Mendel's experiments, it was discovered that the skin of an African can be attributed to

Sickle-cell anaemia has persisted in the human race due to

Which of the following is not a behavioural adaptation used by social animals?