Use words from the word bank to fill in the blanks in the sentences below. Species inherit from . If two living species have some of the same , this means that they are probably of that also had those .

Word Bank
body structures
ancestors
descendants
a common ancestor population

1. body structures

2. ancestors

3. descendants

chordata is the answer

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.