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JulijaS [17]
3 years ago
13

Identify the type of symmetry displayed for each item. then, indicate how you came to your conclusion:

Biology
1 answer:
Ulleksa [173]3 years ago
6 0
A. Petri Dish: Petri dish is radial. When you look at the petri dish from the top or bottom, it has a radial symmetry because it can be distributed into the same half with the center of the bottle or top of the petri dish.
b. Funnel: The funnel is radial. When you look at the higher side of it, the spout attends as the midpoint where the rest of the funnel radiates off. So it has a radial symmetry.
c. Test Tube Rack: Test tube rack is bilateral for the reason that it doesn't have a midpoint the rest of the rack radiates off from.
d. Wash Bottle with Curved Straw: Wash bottle with straw has bilateral symmetry. For the reason that the curved straw, it doesn't have a midpoint where it can be distributed into more than two pieces with identical shape.
e. Graduated Cylinder: It has the bilateral symmetry where the in-between line can be drawn from the spout of the cylinder to the bottom.
f. Tongs: Tongs have bilateral symmetry. It doesn't have a mid-axis which distribute it similarly by any longitudinal plane but has a vertical plane at the mid which makes to semi of it. 
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Given the following cross TtYyRr x TtyyRr (T = tall; t = short Y = yellow; y = green R = round; r = wrinkled), what proportion o
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Answer:

3/32 ttyyR-  

Explanation:

Cross: Tall, Yellow, Rounded individuals with a tall, green, rounded individual

Parentals) TtYyRr      x      TtyyRr      

Gametes) TYR, TyR, TYr, Tyr, tYR, tyR, tYr, tyr (Parent one)

                 TyR, TyR, Tyr, Tyr, tyR, tyR, tyr, tyr (Parent two)

We need to know what proportion of offspring is expected to be short plants with round, green seeds. So we need to identify the gametes for these traits. The genotypes are:

  • Shot → tt
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  • Green → yy

⇒ Parent one can provide gametes tyR and tyr

⇒ Parent two can provide gametes tyR and tyr

(1/8 tyR x 2/8 tyR) + (1/8 tyR x 2/8 tyr) + (1/8 tyr x 2/8 tyR) =

2/64 ttyyRR + 2/64 ttyyRr + 2/64 ttyyRr =

1/32 ttyyRR + 2/32 ttyyRr =

3/32 ttyyR-          

4 0
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Need an answer asap no need for explanation
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Answer:

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Answer:

Because it help us to maintain biodiversity of our planet.

Explanation:

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