What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically Posted on:
The first four children of a couple were all girls. The probability that the fifth will also be a girl is Posted on:
If XN is the dominant allele for normal vision and Xn the recessive allele for colour blindness, a boy with the genotype YXn will be Posted on:
In a population of living things, the parameters of size, height, weight and colour are examples of Posted on:
In which of the following groups of fruits is the pericarp inseparable from the seed coat? Posted on:
Which of the following pairs of organ is located in the anterior half of the mammalian body cavity? Posted on:
When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because Posted on:
