Hands to food:Usually germs are transmitted from unclean hands to food by an infected food preparer who didn't wash his or her hands after using the toilet. The germs are then passed to those who eat the food. This is easily prevented by always washing your hands after using the toilet and before preparing food items
Basically it is more complex then just one locus gene interaction, but basically if both parents have brown hair they can have a child with blonde hair because both parents could be heterozygous for brown and pass on the recessive allele for blonde hair. in simple genetic analysis this would happen to 25% of the children.
Your question is rather unclear but from what I can tell either there were not an even amount of Petri dishes or some of them were left open while others were not.
100 percent is the correct answer to the question
Answer:
Explanation:
Genetics is a branch of biology that deals with the study of genes, genetic variability and hereditary in different organisms. Genetics can be used in medicine and health as outlined below.
1. Use for early detection of genetic disorders I.e it is used for prenatal disorders.
2. To test for mutations(change in gene content) in DNA which causes different deadly diseases e.g breast cancer.
3.It is use to manage diseases associated with metabolism.
4.It is use for molecular diagonistics of different kind of genetics diseases e.g celiac disease, Wilson disease e.tc.
