Choose all the answers that apply. Check the statements that are true.

A hypothesis must be proven true in order for an experiment to be valid.
Electrons and protons are examples of cycles.
A valid experiment must have results that can be repeated.
Observations are the final stage of an experiment.
Science is based on fact.

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?