Two true-breeding parents, one who is a Iceberg and Balsamic lover, and the other who is Romaine, Thousand Island lover, are mated. One of the F1 offspring is back-crossed to a Iceberg, Balsamic lover. If the observed counts of each phenotype from 500 F2 offspring are: Ice/Ba Ro/TI Ice/TI Ro/Ba 240 240 10 10 what is the estimated recombination fraction between the two genes?A. Ice/Ba Ro/TI Ice/TI Ro/Ba125 125 125 125B. Ice/Ba Ro/TI Ice/TI Ro/Ba200 100 100 50C. Ice/Ba Ro/TI Ice/TI Ro/Ba205 205 45 45D. Ice/Ba Ro/TI Ice/TI Ro/Ba225 225 25 25E. Ice/Ba Ro/TI Ice/TI Ro/Ba200 200 50 50

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation:

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

answer; coat color for blending in with dry grass;

artificial selection

explanation:

this occur when man select base on their intelligent