Sickle Cell anemia is a disease caused by a recessive allele. What is the chance a child will be a carrier for Sickle Cell if one parent has it, and the other parent does not, and is homozygous.

A. 50%

B. 100%

C. 75%

D. 25%

Lakes and ponds which have limestone or calcium carbonate are affected less by acid rain than those which have granite. This is because?

What type of cells do we find different

If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is_? A. identical to only one parent B. the recessive traits of each C. a unique combination of both parents

Penicillin is Choose one: A. produced by a mold and was discovered accidentally. B. a human-designed antibiotic, synthesized to specifically target human pathogens. C. synthesized by Staphylococcus bacteria. D.

1. When you notice that someone has unusually blue eyes, you've noticed their

Enzymes work best at?

Which technique is used to separate the different cell parts?

How do scientists know that the universe is expanding? The Doppler effect shows stars with yellow shifted light The Doppler effect shows stars with green shifted light The Doppler effect shows stars with red shifted light The Doppler effect shows

What are two ways in which scientists transform plant cells without using plasmids?

Exploring how indoor air pollutions lead to respiratory problems is an example of using biology to what