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alekssr [168]
2 years ago
14

2. Explain where a person’s DNA comes from.

Biology
1 answer:
IRISSAK [1]2 years ago
5 0

Answer:

Each cell in your body has DNA, but the DNA formation was influenced by your parents. Their genes formed your genes.

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What is the expected phenotype of F1 progeny from a cross between two homozygous recessive mutants disrupted in different genese
LenaWriter [7]

Answer:

The correct answer would be - wildtype.

Explanation:

Let assume there are four genes which are :

A-B-C-D

In mutant first, the genotype would be:---a-b-C-D

In the mutant second, the genotype would be:--A-B-c-d

If both of these genotypes are crossed with each other, the recessive genes a, b of mutant first is dominated and masked the expression by the dominant genes present in the mutant second.

Similarly, the recessive genes of the mutant second are dominated and masked expression by the dominant genes of mutant first.  This is possible only due to different genes are present in mutants.

Thus, the correct answer is - The correct answer would be - wildtype.

6 0
3 years ago
The presence of useless eyes on a mole rat is evidence of which scientific theory?
Paha777 [63]

The answer to this question is

B: the theory of evolution

I hyope this is correct and helps

8 0
2 years ago
Describe five advantages of artificial classification​
OleMash [197]

Answer:

there it is fella

i guess the hand writing is not that bad

6 0
2 years ago
1. List 2 interactions between the earth spheres and the water cycle.
Harrizon [31]

Answer:

The carbon cycle, as the nitrogen cycle, occurs in all the spheres: Biosphere, Atmosphere, Geosphere and Hydrosphere.

Explanation:

Most Earth events involve interaction between multiple spheres. For example, rain is the movement of water (the hydrosphere) from the atmosphere to the lithosphere where it collects in lakes, rivers, or streams. Water is an important resource for inhabitants of the biosphere.

The Atmosphere-contains all the air in Earth's system. The upper portion of the atmosphere protects the organisms of the biosphere from the sun's ultraviolet radiation. It also absorbs and emits heat. This sphere is also where weather occurs.

The nitrogen cycle occurs in all the spheres and ecosystems. It passes through rocks, water, atmosphere, plants, etc.

In atmosphere and biosphere: Nitrogen is about 78% of the gases in the atmosphere an it’s a essential component of the living organisms. It enters plants through the microorganisms that convert this nitrogen into ammonia. After this conversion, the plants absorb this substance. It can pass to animals when they eat these plants. Then, when they urinate, bacteria convert ammonia to nitrogen again and it returns to the atmosphere.

Sources:

https://earthsphereslife.wordpress.com/2020/03/31/nitrogen-cycle/https://earthsphereslife.wordpress.com/2020/04/01/carbon-cycle-in-all-the-spheres/

4 0
2 years ago
Where do the instructions for making protiens come fron
ss7ja [257]

Answer:

It comes from the person whoever made it

Explanation:

4 0
3 years ago
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