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ElenaW [278]
3 years ago
6

What types of molecules make up the cell membrane?

Biology
1 answer:
blsea [12.9K]3 years ago
3 0

Answer:

The double layers of cell membranes are made up of PHOSPHOLIPIDS.

The cell membrane, also called plasma membrane is made up of double layers of phospholipids.  The Phospholipid is a type of lipid, which is made up of two parts, an hydrophillic head, and a hydrophobic tail. The hydrophillic head is made up of phosphate and glyerol while the hydrophobic tail is made up of fatty acids. The double layer of phospholipids serves as a barrier that allows only certain substances to enter into the cells.

Explanatiion:

I searched it up : p

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Tallness (T) in snapdragons is dominant to dwarfness (t), and red (R) flower color is dominant to white (r). The heterozygous co
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Answer:

E. 6:3:3:2:1:1

Explanation:

Look at the attached picture to see the Punnett square for your problem.

The cross for this is snapdragons who are heterozygous for both traits so the cross would be:

<em>TtRr x TtRr</em>

As you can see in the image, you have the following genotype combinations with the corresponding phenotype combinations:

GENTOTYPE       PHENOTYPE            NUMBER

TTRR                    Tall - Red                        1

TtRR                     Tall - Red                        2

TTRr                     Tall - Pink                       2

TtRr                      Tall - Pink                       4

TTrr                      Tall - White                     1

Ttrr                       Tall - White                     2

ttRR                      Short - Red                     1  

ttRr                       Short - Pink                    2

ttrr                        Short - White                  1

The following phenotype combinations in summary would then be:

Tall - Pink:     6

Tall - Red:      3

Tall - White:   3

Short - Pink:   2

Short - White: 1

Short - Red:   1

So the ratio is 9:3:3:2:1:1

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