Many modern tests can detect pregnancy soon after fertilization occurs. which of the following explains why it is important for a woman to know she is pregnant within the first trimester? (2 points) it is when the brain and spinal cord are formed. it is when the lungs complete their development. it is when the nervous system begins to control body functions. it is when the organs start to function on their own.

During the process of meiosis, special cells called gametes are formed. gametes only have half the number of chromosomes that the other cells in the body have. what form of reproduction do organisms that produce gametes use?

The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

What is the inability of an individual or a society to achieve a minimum standard of living known as ?