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Nady [450]
3 years ago
9

Why do scientists usually try to work without making the animals aware that humans are present

Biology
1 answer:
FromTheMoon [43]3 years ago
4 0

Answer:

In animal field studies, why do scientists usually try to work without making the animals aware that the humans are present? It is necessary to observe the animals without disturbing them. When a controlled experiment is not possible, why do scientists try to identify as many relevant variables as possible?

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Pea flowers may be purple (P) or white (p). Pea seeds may be round (R) or wrinkled (r). What proportion of the offspring from a
soldi70 [24.7K]

Answer:

The correct answer is c. 3/16.

Explanation:

In the given question two traits being studied, the traits are flower color and seed shape.

This is a typical Mendel’s dihybrid cross. According to the question purple colour (P) and round seed (R) are dominant traits.

When heterozygous purple-flowered (Pp), round-seeded (Rr) individuals are crossed, four different types of plants are produced phenotypically in the ratio 9:3:3:1.Out of 16 offspring, 9 are purple flowered, round seeded pea plants, 3 pea plants are white-flower with round seed, 3 are purple- flower with wrinkled seed and 1 pea plant is white-flowered with wrinkled seed pea plant is produced.  

8 0
3 years ago
genetic engineering might allow parent to 'design' their children before birth are you in favor of this? why or why not?​
ludmilkaskok [199]

Answer:

I think it is quite an interesting idea to allow parents to 'design' their children before birth. Because some people have preferences and those preferences are taken very seriously. I wouldn't want to have a baby boy, I would want a baby girl. Although, this could be a waste of money and time because this might be one of the things that are better not to be fixed even if it isn't broken. But, this can also be good, if you desperately need a child with specific features, this can help. Even if I can't seem to find a reason where a child is supposed to have specific features.

Explanation:

4 0
2 years ago
How is carbon moving between the air and found it decreasing in the  diodome
scoray [572]

Answer: They read articles about photosynthesis. They investigate photosynthesis, energy storage molecules, and carbon in the sim. ... This process moves carbon from biotic to abiotic matter. Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.

Explanation:

6 0
3 years ago
What are the two components of a 5-methyluridine?
AlekseyPX

The two components of a 5-methyluridine are thymine and ribose pentose sugar. Here thymine will joined with the ribose pentose sugar . Thymine is the nucleic acid . There are two types of nucleic bases . Purine and pyramidine . Hence purine comes under pyramidine. Thymine is represnted by T symbole.

4 0
3 years ago
Rank the 5 impacts humans have on the environment in order from easiest to fix to hardest to fix and
lbvjy [14]

Answer:

The 5 impacts humans have on the environment in order from easiest to fix to hardest to fix is explained below in details.

Explanation:

Humans impact the physical surroundings in various forms: pollution, smoking fossil fuels, overpopulation, including deforestation. Developments like these have triggered climate modification, soil erosion, poor air quality, and impure water.

The Biggest Environmental Problems

  • Biodiversity Decline.
  • Plastic Pollution.
  • Deforestation.
  • Air Pollution.
  • Agriculture.

3 0
3 years ago
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