A, C, and E are correct.
All traits are inherited from parents, with one allele for a gene coming from each parent. If an offspring receives two identical alleles for a given gene, it is homozygous for that gene.
Since Duchenne muscular dystrophy is X-linked recessive, it requires all of the X chromosomes in a human to take effect. This is what makes it recessive.
Since females have two X chromosomes, both of their X chromosomes must have the allele for Duchenne muscular dystrophy in order to be an active disease.
However, since males only have one X chromosome, they only need to have the allele for Duchenne muscular dystrophy on that single chromosome in order to be an active disease.
It is much more likely to get one affected X chromosome than it is to get two affected X chromosomes, therefore this disease is almost always restricted to males.
Bar graphs are graphs that can be used to display quantitative or qualitative.They are useful for quantitative or qualitative data. With qualitative data, the frequency or percentage of occurrence can be displayed. With quantitative data, the measurement itself can be displayed..
This is <span>B. The nitrogen base</span>
Esta teoría hace referencia al movimiento actual de las placas que sustentan los continentes y que se desplazan a lo largo de millones de años. En toda la historia geológica de la Tierra, los continentes no han estado siempre en la misma posición. Existe una serie de evidencias que veremos posteriormente que ayudaron a Wegener a refutar su teoría. El movimiento se debe a que continuamente está formándose nuevo material procedente del manto. Este material se crea en la corteza oceánica