Cooing and babbling are early stages of speech development. As babies get older (often around 9 months), they begin to string sounds together, incorporate the different tones of speech, and say words like mama and dada (without really understanding what those words mean).
The map distance between two genes, measured in centimorgans or map units, equals the percentage recombination frequency between the two genes--the likelihood of offspring with copies of those genes on the same chromosome that come from different parents.ave. dna image by Allyson Ricketts from Fotolia.com. The concept of map distance in a genotype refers to where genes are located on a chromosome but does not refer to physical distance; rather, map distance refers to the tendency for a crossover to occur between genes.
If the two genes were unlinked, i e on different chromosomes (or very far away on the same chromosome) then 50% of the time the different chomosomes would go to different cell during meiosis and 50% of the time they go to the same cell.Linkage is a statistical concept. Rf is between 0 and 50%.f so, how many units apart are they on the chromosome. Another question says: Give the percentage of recombination and the map distance between the genes. I would like to know HOW to answer the questions.