Which best explains why hemophilia is more common in males than in females?

A. Hemophilia is caused by a dominant allele.

B. Hemophilia only occurs in the presence of male hormones.

C. The hemophilia allele is located on the X chromosome, and males have only one X chromosome.

D. The hemophilia allele is located on the Y chromosome, and females do not have a Y chromosome.

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Dr. bob hypothesizes that drug x causes cuts to heal more quickly. he performs a medical experiment on a group of 100 people and confirms his original hypothesis. in the control group, a 1 cm cut took seven days to heal. in the experimental group, a 1 cm cut took four days to heal. what should dr. bob do next? a) repeat the experiment for accuracy. b) begin selling drug x to the public. c) write a scientific theory about drug x. d) publish the results of the experiment in a scientific journal.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

What best describes the dropping height of a ball that bounces back up to a height of 45 cm