If a boy exhibits a sex-linked trait that is carried on the X chromosome, what must be true?

His mother exhibited the trait

His mother had at least one allele

A man has the genotype BBEE. He has brown hair and free earlobes. What are the different combinations of these alleles in his gamates. (4 answers)

Mitochondria are a cells powerhouse which of these cells would need a large number of mitochondria to function and survive

How does solid rock become soil

Which feature of DNA regulates the type of enzymes produced in a cell

Under a microscope how do u determine a specimen is living

Why are most open ocean organism found in the epipelagic zone?

What is the purpose of a hypothesis? O A) It specifies the procedure for a scientific experiment. OB) It is a prediction of whether an experiment will give useful results. OC) It tells other scientists what kind of research they should be doing.

What plays many roles in the body and determines many traits

Which of the following has the greatest level of certainty? Law Theory Hypothesis None of the above

Is there any place on Venus humans could live? Explain.