Because the frequency of crossing over is not uniform along the length of a chromosome, . ( ) the centimorgan is an unreliable unit of measurement, and is rarely used today pairs of homologous chromosomes contain small but significant differences in gene order the recombination frequency between two genes cannot be used to calculate the number of map units separating them recombination frequency cannot be used to determine the number of centimorgans separating two genes map units do not necessarily correlate to physical distances along the chromosome

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Isotopes of the same element have differ in their

Give examples of selective advantage of organism’s body part/organ