The major threat to humans and the most prominent selection pressure are disease organisms that target the immune system.
These organisms impair the body's ability to fight off invasion from pathogens, and there is no "back up immune system" to protect the immune system from attack. An example of a pathogen that attacks the human immune system is the Human Immunodeficiency Virus (HIV).
Something good that has happened that is the result of chance instead of skill or planning for example that goal was just a fluke
Answer
if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2
= 1. If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0.
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In guinea pigs, rough coat (R) is dominant over smooth coat (r). Predict the genotypes and phenotypes of the offspring and give the genotypic and phenotypic ratios is a homozygous dominant guinea pig is crossed with a heterozygous guinea pig. 3. ... In humans, brown eyes (B) are dominant over blue (b).
bacteria are classified into 5 groups, spherical (cocci), rod (bacilli), spiral (spirilla), comma (vibrios) or corkscrew (spirochaetes).
