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amm1812
2 years ago
8

What is the relationship between DNA, a gene, and a chromosome?

Biology
2 answers:
topjm [15]2 years ago
8 0

Answer:

A

Explanation:

The correct option is (a). Chromosomes are long thread-like structures present in the nucleus of a cell which contains hereditary information of the cell (genes). Genes are the part of a chromosome and made up of DNA.

BartSMP [9]2 years ago
4 0

Answer:

A

Explanation:

chromosomes contain genes and Gene's are made of dna.

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kap26 [50]
The answer is green, yellow, and orange
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3 years ago
1. What type of response will a red blood cell have when placed in a hypertonic solution?
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Hypertonic solution means the solution with a lower water potential than the cell cytoplasm, such as salt water.

When the red blood cell is put into it, since the cell has a higher water potential than the solution, water molecules will flow from the cell back into the water due to osmosis.

Osmosis is always where water molecules flow from a region of higher water potential to lower, through a semi permeable membrane (Whcih is the red blood cell membrane in this case.)

Since water flowed out of the cell, the cell lose water and shrinks.

Hypotonic solution is where the solution that has a higher water potential than the cell cytoplasm.

So when the red blood cell is put in that solution, the water will flow from the solution into the cell this time, by osmosis.

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3 years ago
Where should the origin of the swim bladder be placed on the phylogenetic tree?
dolphi86 [110]

Answer:

At the base of Actinopterygii

*This is a unique characteristic of this group.

Explanation:

A peculiar characteristic organ observed in ray-finned fish (as well as in Sarcopterygii, or lobe-finned fish) but not in cartilaginous fish like shark is the swim bladder.

This organ is often described to be a sac containing gas. It helps these set of fish adjust its buoyancy and its position in the water by regulating the concentration of gas present in it.

The swim bladder is formed as a pouch coming off the embryonic digestive tract, and in chondrosteans and holosteans, with a set of teleosts e.g. the eels, it maintains an open pathway to the esophagus. In majority of the bony fish, the swim bladder is totally sealed off, as gas levels in their swim bladder are regulated by producing gas into the bladder via a network of capillaries, the rete mirabile (Latin word for "marvelous net").

The swim bladder is homologous to the lungs of tetrapods. Since they are formed in the same vein. Few fishes that have an open swim bladder employs it as a breathing organ.

6 0
2 years ago
Write a hypothesis about the effect of dry conditions on earthworm behavior. Use the "if . . . then . . . because . . .” format,
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Answer:

If the earthworm external stimuli is affected, then the behavior would change because earthworms react negatively to odors.

5 0
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A possible result of pumping large amounts of water from an underground aquifer is that
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Wells in an area might run dry

7 0
2 years ago
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