Answer: The chances of their children having hemophilia is zero. All their children will be carriers of one gene for hemophilia.
Explanation: When they cross breed, 100% of their will have a single gene for hemophilia. The products of the cross breed is 2 XhXH and 2 XhY. See the attached diagram for illustration.
To protect the researcher and to maintain the integrity of the experiment.
Answer:
The correct answer is conservative model.
Explanation:
There are 3 hypothesized DNA replication models: semi-conservative, conservative and dispersive model (see figure). Heavy isotope of nitrogen makes diference when density gradient centrifugation experiment conducted and two diffent bands contaning different isotopes of nitrogen are observed. With one band only containing 14N means bacteria only copies one strand in one replication which supports semi conservative model.
Answer: The sun is the closest star to Earth. ... It radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produce.