‘Linked genes’ is a term used for two characters, whose genes are situated on the same chromosome. You are asked to investigate whether two characters of pea plants, are linked or not. The two characters are flower color and pollen shape. The dominant traits are purple flowers and long pollen grains. The recessive traits are white flower color and round pollen grains. You have true breeding strains available, and a garden. Which crosses do you make and how do you determine whether the genes for flower color and pollen shape are linked, or not? Provide enough detail so we can assess your understanding, e. g. draw Punnett squares and provide expected ratios of offspring for each cross.

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explanation:

the sphincter muscles at the end of the digestive tract is the anus.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: