In the growth hormone, the receptor binding domain was mapped from amino acids 48-60. In order to determine, which amino acids are involved in its binding to the receptor, the following mutations were performed and the binding assay results are listed below.

MUTATIONS BINDING ASSAY RESULTS
A48 V Yes
G46V No
A48R Yes
H52G Yes
G46R No
H52D No
G46V+H52G No
A48R + H52G No

a. What is the role of the amino acid 48?
b. What is the role of amino acid 52?
c. What do you conclude from the double mutation G46V+H52G?
d. What did you learn from the double mutation A48R+H52G?
e. Which amino acids are important in hormone binding to receptor?

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Be in this im starting a with you so if you want you can get a partner for this. but basically im going to assign you guys a biome and you have to have a big sheet paper and you will turn it into 4 squares. the top right square is will be a drawing square for a drawing you will make of your biome. the top left square is about the biomes plants and drawings of them. the bottom left square is about the biomes animals. the bottem rights square is about the description of the biome. leave a comment or an answer and i will assign biomes. if your request one thats the one you get. send me a link to the project and i will grade ! im not a teacher btw.

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time