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trasher [3.6K]
3 years ago
11

What is natural selection?

Biology
1 answer:
Jobisdone [24]3 years ago
4 0
A) a process that selects variations that help with survival and that spreads the variations to more offspring
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In the lab, you use a special balloon that is permeable to water but not sucrose to make an "artificial cell." The balloon is fi
WARRIOR [948]

Answer:

The correct answer is B. water will leave the balloon.

Explanation:

As the sucrose concentration is higher in the solution, the water in the balloon, where the sucrose is less concentrated, will tend to leave and try to dilute the outer solution until both sucrose concentrations are equal. But as the water leaves the balloon, the concentration inside will increase, so it will flow outside until both concentrations are equal and not until the outer concentration is similar to the initial concentration in the balloon.

7 0
3 years ago
What types of genes also have more than two phenotypes?
Sever21 [200]

Answer:

An organism which has two different alleles of the gene is called heterozygous. Phenotypes (the expressed characteristics) associated with a certain allele can sometimes be dominant or recessive, but often they are neither.

8 0
3 years ago
Mitosis and meiosis always differ in regard to the presence of a. chromatids. b. homologs. c. bivalents. d. centromeres. e. spin
Fantom [35]

Answer:

c. bivalents.

Explanation:

In Meiosis a bivalents are formed during the first stage of meiosis which is the prophase. The bivalent consist of a paired chromosome and four chromatids i.e two chromosomes in a tetrad. one chromosome comes from each parent.

In mitosis, a bivalent is not formed. There is the presence of chromatids, homologs, centromeres and spindles during mitosis and meiosis.

5 0
3 years ago
Read 2 more answers
Which of the following represents types of aquatic mammals from most aquatic to least aquatic?
dolphi86 [110]

Answer:

I would say polar beats

Explanation:

As polar bears actually don't have to get in water..

Not sure ok sorry

5 0
3 years ago
Match the organ to the number showing the order of blood flow in the circulatory system.
trasher [3.6K]

Answer:

What sends oxygenated blood back to the heart from the lungs?

Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.

Explanation:

3 0
3 years ago
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