In an agricultural study, scientists used a cell sorter to separate bovine sperm cells containing X chromosomes from those containing Y chromosomes, with the aim of increasing the proportion of female offspring (heifers) for dairy production.
In one trial, sperm cells from the X-chromosome-selected group produced 45 female offspring out of a total of 48 offspring. Calculate the success of producing females as a percentage of the total number of offspring. Give your answer to 1 decimal place.
Describe the control group that should be used in this investigation to compare against the sorted sperm group.
Predict the expected percentage of female offspring in this control group.
74 exam-style questions on Edexcel IGCSE Biology Food production. Each one has a worked solution and a mark scheme showing where the marks go.