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Serga [27]
3 years ago
8

Which pair of characteristics would you use to place a fish in one of the three fish classes: agnatha, cartilaginous fishes, or

bony fishes?
Biology
1 answer:
Serhud [2]3 years ago
5 0
The pair of characteristics that one must use to classify a fish is the presence of jaw and skeleton type. Agnatha fishes are also called jawless fishes and they lack bony skeletons. Cartilaginous fishes are composed of cartilage skeletons. Bony fishes have bony skeleton structures.
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What is the force of an object that needs a force 4500N to accelerate it at a rate of 5 m/s
babunello [35]

Answer:

The question is somehow not correct, it suppose to be what is the MASS of an object that needs a force 4500N to accelerate it at a rate of 5 m/s as gotten from another website.

The correct answer is 900kg.

Explanation:

To get the mass of the object use the formula

F=Ma

Where F is force

M is mass

a is acceleration.

F= 4500, M=? a=5m/s

4500= M× 5

M=4500/5

M=900kg

Mass is in kg

8 0
2 years ago
The ability of the human body to break down the red color in beets is controlled by an autosomal dominant allele. The inability
Zinaida [17]

Answer:

Explanation:

<em>Let the ability to break down the red color in beets be represented by the allele </em><em>B</em><em>. The inability would be represented by the allele </em><em>b</em><em>.</em>

A nonsecretor's genotype would be BB or Bb while a secretor's genotype would be bb.

A nonsecretor woman with a secretor father would be a carrier with genotype Bb. A nonsecretor man who in a previous marriage had a secretor daughter would also be a carrier with genotype Bb. If the two marries:

            <em>Bb     x     Bb</em>

<em>            BB    2Bb    bb</em>

1.

(a) probability of their first child will be a secretor girl = probability of having a girl and being a secretor.

Probability of having a girl = 1/2

Probability of being a secretor = 1/4

<em>probability of their first child will be a secretor girl</em> = 1/2 x 1/4 = 1/8

(b) Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor.

Probability of having a girl = 1/2

Probability of being a nonsecretor = 3/4

<em>Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor</em> = 1/2 x 3/4 = 3/8

2. <em>Probability that their first two children will be nonsecretors of either sex = probability of their first being a nonsecretor and of either sex and probability of their second being a nonsecretor and of either sex.</em>

  = 3/4 x 3/4 = 9/16

6 0
3 years ago
In the light dependent photosynthetic reactions, light energy is converted into _________ energy, which is stored in molecules l
elena-s [515]
The Correct Answer Is A.
6 0
3 years ago
Over time the cartilage in your body is replaced by solid bone and is usually complete by the time you stop growing.
algol13
True. Otherwise we would never stop growing although broken bones regain cartilage into solid bone when we break one but it doesn’t expand.
8 0
2 years ago
During which part of the cell cycle is the duplicated genetic material within the nucleus of a parent cell separated to creat tw
dlinn [17]
I think the answer is B

Beacuse It follows the successful completion of S phase, during which the cell's DNA is replicated. Mitosis is a part of the cell cycle process by which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus.
5 0
3 years ago
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