Duchenne muscular dystrophy is a genetic disorder that arises from a recessive x-linked allele. why is this disorder almost always restricted to males?
a. males have xx chromosomes and therefore have a higher chance of carrying both recessive alleles for this genetic disorder.
b. females have xx chromosomes and therefore have a very low chance of carrying both recessive alleles for this genetic disorder.
c. females have xx chromosomes and therefore have a higher chance of carrying both recessive alleles for this genetic disorder.

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

What is the cause hearing loss in human being