The protein attaches to the host ACE2 receptor and then promotes fusion of the host membrane with the envelop of the viral particle.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Which of the following statements is true? a. there are more chromosomes in an organism than there are genes. b. there are more genes in an organism that there are chemical bases. c. dna is made of sugar, phosphate, and carbon. d. genes are found in specific locations on a chromosome.

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi