FYI: Most food is usually safe at room temperature for about two hours. If [food] feels as cold inside that lunch box as it feels inside your refrigerator, everything's good, she adds. If it doesn't feel cold to your hand, it's not..â¢Remember: How food is handled during its travels through the food chain can vary.YI: Most food is usually safe at room temperature for about two hours. If [food] feels as cold inside that lunch box as it feels inside your refrigerator, everything's good, she adds. If it doesn't feel cold to your hand, it's not..
Pairs of chromosomes that are not identical but have genes for the same trait arranged in the same order Homologous Chromosomes Each pair of cells has one chromosome from the mother and one chromosome from the father
Mammals and Drosophila females have two X chromosomes: XX males have one X chromosome and one Y: XY These are the  sex chromosomes , all other chromosomes are called  autosomes . The sex with two different chromosomes is the heterogametic sex. The other is the homogametic sex. For the X chromosome then, female mammals and Drosophila have two copies of each gene on the X, but males have only one. Females can be homozygous or heterozygous, but males are hemizygous.