La distrofia muscular de Duchenne viene determinada por una mutación recesiva en un gen situado en el segmento diferencial del cromosoma X.

- a) ¿Cuál es la probabilidad de que una mujer cuyo hermano

presenta la enfermedad tenga su primer hijo afectado?

- b) ¿Cuál es la probabilidad de que una mujer,

cuyo tío materno presenta la enfermedad, tenga su primer hijo afectado?

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

about 40,000,000 results (0.81 seconds)  

search results

what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.