In some types of wheat, color is caused by two sets of genes. both dominant genes a and e are needed for red color. white results from both recessive genes in the homozygous state (aaee). other combinations will produce brown wheat grains. a strain with the genotype aaee is crossed with a strain having the genotype aaee. what will be the frequency of red offspring?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

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

What is the process by which biological parents pass traits such as hair type or eye color to their children