Why can males only have a y-linked trait?

Hemophilia is a blood clotting disorder that is a sex-linked trait carried on the X chromosome. If a woman with hemophilia and a man without the disorder have two sons and two daughters, how many of their children would have hemophilia?

Describe what would happen if we removed all the plants from a food chain i need a good scientific long answer

Jose and Karl were both exposed to the influenza virus at work. Jose had a flu shot made from killed influenza virus six weeks ago, but Karl has not gotten around to getting his vaccinations yet.

Dr. Harris performs an experiment to test whether temperature or sunlight affects fur thickness in this species of rabbit. Which of the following is true about the results of Dr. Harris' experiment?

What stage of mitosis does chromatin condenses into chromosome

According to Kepler's second law, which factor is constant as a line between a planet and the sun sweeps out two equal areas at different places as it moves along its orbit? A. The amount of time B. The distance the planet moves C.

The different conservation efforts being applied to protect rainforests.

How would you classify the relationship between the different species of coral?

Which of the following illustrates intraspecific competition? A sea gull swooping down to snatch a fish from the water's surface Male red-winged blackbirds defending limited nesting sites from other males A butterfly feeding on the nectar of a

What is one disease that follows the lytic cycle?