Dominant & recessive alleles are similar to sex-linked alleles because... A. both have alleles that are only present on the X or Y chromosome.
B. both have one allele that hides the other allele when it is present.
C. both blend the allele traits together in the phenotype.
D. both have two or more dominant alleles.
I will give brainliest please help

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

How do light years astronomers to determine the ages of distant objects in space ?