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stellarik [79]
3 years ago
8

Cameron is collecting data to determine the time of completion for each stage of germination in seeds. He is using bean seeds fo

r his investigation and recording his results. He repeats his data collection many times to obtain reliable results. Which aspect of his experimental process is most important for obtaining reliable results?
A.Collecting enough varieties of onion types
B.Talking to other scientists during the experiment
C. Taking observations at precise intervals
D. Using a variety of microscopes for exact measurements
Biology
2 answers:
zhenek [66]3 years ago
6 0

Your answer would be <em>C</em> or<em> </em><em>Taking observations at precise intervals.</em>

Alina [70]3 years ago
5 0

The correct answer choice would be answer choice <em>C</em>.

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Which of the following best describes the circled part of the<br> statement?<br> 7x + 9= 40
garri49 [273]

Answer:

4(3/7)

Explanation:

7x+9=40

7x=40-9

x=31/7

x=4(3/7)....

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What evidence links echinoderms, hemichordates and chordates to the same evolutionary lineage?
sleet_krkn [62]

Answer:

Embryological evidence

Explanation:

Deuterostomes is a group that includes echinoderms, hemichordates, and chordates. Although these animals exhibit a wide variety of body plans, they share a mouth secondarily formed during embryo development, which it is believed to be an evolutionarily derived character present between a common ancestor and all its descendants (i.e., a synapomorphy). This oral cavity is formed by the invagination of the ectoderm layer opposite to the blastopore of the gastrula.

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3 years ago
If one parent has type B blood and the other type O blood what percentage of the child's blood will be B, O, A?
kirill115 [55]

Answer:

If one parent has blood type B and the other parent has blood type O, the percentage of the blood type of the offspring will depend on the genotype of the parent with blood type B.

Explanation:

Knowing the blood type of the offspring of the cross between parents with blood type B and O raises two possible scenarios, depending on whether the genotype of the parent (type B) is B|B or B|O.

Blood type is an inherited trait and is characterized by the presence or absence of surface antigens A and B in the red blood cells, which genetically behave as co-dominant traits.

  • <em>Blood type A</em><em> contains antigen A and its genotype can be A|A or A|O. </em>
  • <em>Blood type B </em><em>contains the B antigen, whose genotype can be B|B or B|O. </em>
  • <em>Blood type AB </em><em>contains both antigens and a single A|B genotypic expression. </em>
  • <em>Type O blood lacks surface antigens, and is the recessive trait so its genotype is O|O.</em>

<u>Scenario 1: Parent with genotype B|B.</u>

In this case, knowing that the genotype for type O is always O|O, all offspring would be of blood type B, genotype B|O.

B|B X O|O

Alleles    B    B

O          B|O B|O

O          B|O B|O

100% of the offspring would be of blood type B.

<u>Scenario 2: Parent with genotype B|O.</u>

In this case, 50% of the offspring will have blood type O and 50% B.

B|O X O|O

Alleles    B    O

O           B|O O|O

O           B|O O|O

In no scenario would offspring of blood type A be possible.

8 0
2 years ago
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The answer is planetary migration
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Um you could buy different types of cat food and test to see what your cat prefers 
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