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qaws [65]
3 years ago
10

Plasma membranes are selectively permeable. This means that

Biology
1 answer:
kenny6666 [7]3 years ago
8 0

Answer: ONLY CERTAIN SUBSTANCES CAN PASS THROUGH IT

Explanation:

1 only gases and water can pass through it.

2 substances need permission to pass through it.

3 only certain substances can pass through it.

4 substances need carrier molecules to pass through it.

5 ATP is always needed to move molecules across the plasma membrane.

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A recessive gene located on the X chromosome is the cause of one type of colorblindness (denoted by Xc). Let the genotype for no
Alex73 [517]

The scenario will be Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son

<h3>What is color blindness?</h3>

The condition is frequently inherited. Certain eye diseases and medications are also possible causes. Men are more affected than women.

Color blindness is characterized by the inability to distinguish between red and green shades.

A colorblind man's genotype is XcY, and a heterozygous carrier female's genotype is XcX. A cross between XcY and XcX would result in progeny with the following ratio=

Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son.

Thus, the couple is likely to have a son who is half normal and half affected. Similarly, the couple is likely to have 50% normal daughters and 50% colorblind daughters.

For more details regarding color blindness, visit:

brainly.com/question/25621649

#SPJ1

6 0
1 year ago
What is a gene? a single strand of DNA. the fundamental unit of heredity. a single nucleotide. the fundamental unit of DNA
const2013 [10]

Answer:

the fundamental unit of heredity

Explanation:

DNA is a double stranded helix structure. Each strand is made up of a string of nucleotides.

A gene is a region of DNA, usually tens of thousands of nucleotides long. At the simplest level, one gene encodes for one trait. Therefore, the gene can be described as the fundamental unit of heredity.

Genes work by coding for specific proteins, which carry out essentially all the functions in the cell.

6 0
2 years ago
When salts are dissolved in water they_
ikadub [295]
They separate into ions
3 0
3 years ago
When a landslide occurs, it is most like due to: High winds Soil creep slumping rock metamorphosis
Akimi4 [234]

I think it is

rock metamorphosis

Hope it helped

Please mark me as Brainliest

6 0
2 years ago
Read 2 more answers
A plant with high _____ is healthy and rigid. <br> cell walls<br> turgor<br> stroma<br> pith
Black_prince [1.1K]
The correct answer is Turgor. Turgor pressure keeps plants rigid, that is why plants are called turgid. 
5 0
3 years ago
Read 2 more answers
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