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lilavasa [31]
3 years ago
9

Which of the following are guidelines to follow for obtaining accurate observations? A. Taking careful measurements B. Using vag

ue, boring language C. Making careful sketches D. Making up data to fill in gaps
Biology
1 answer:
vesna_86 [32]3 years ago
4 0

The guidelines for making good and accurate observations are:

1. Standardise the experimental setup: Know the precision and the accuracy of the instrument used to make observations. Example, thermometer with a least count of 1°C cannot measure in fractional values.

2.Take careful measurements: Holding the instrument properly without causing any disturbance is the key.

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Answer:

In Labrador dogs, black coat is dominant to chocolate, normal vision is dominant to progressive retinal atrophy (PRA), and normal hip joint is dominant to hip dysplasia. All these genes assort independently. Two dogs that are heterozygous for alleles of all three genes are crossed. Using rules of probability (not a Punnett square), what is the chance that the first pup born to these dogs will be chocolate, have normal vision, and have normal hip joints?

BbVvHh x BbVvHh= BBVVHH, BbVvHh, BbVvHh, bbvvhh

Bb= black coat dominant

Vv= Normal vision dominant

Hh= Normal hip join dominant

probability of having a first born of these dogs will be chocolate, have normal vision and have normal hip joint is 0

Explanation:

As the punette square gives 3:1 phenotype having three black coat, normal vision and normal hip joint and one chocolate, progressive retina altropy and hip dysplasia

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https://phys.org/news/2009-05-bird-songs-environment.html

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