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?

Idont understand by supporting the plant and holding the leaves up to the light. question 3 options: tap or fibrous root flower petals herbaceous or wood stems leaves with stomata

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.