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Leni [432]
2 years ago
10

You are given this hypothesis: “if beans are grown in soil with compost, then they will grow at the same rate as beans grown in

soil without compost because compost has no effect on the growth rate of beans.” You have access to these supplies and equipment: fifty bean seeds, fifty small pots, potting soil, compost, and grow lights. Write a brief scientific design to test this hypothesis. Include the aspects of good scientific design described in this lesson.Enter your scientific design in the space below.
Biology
2 answers:
ioda2 years ago
8 0
You put 1 bean seed in each small pot, fill 25 of the pots with only potting soil, and the remainder with 1/2 potting soil and 1/2 compost. Then you put all of them under an equal amount of grow lights. Put them under at the same time, and take notes every day to see if they grow at the same rate or not. If they do, then it proves this hypothesis is correct. If they don't then the hypothesis is wrong

hope this helps
hjlf2 years ago
8 0

Divide plants into two groups of twenty-five. Plant twenty-five seeds in pots with potting soil without compost; this is the control group. Plant the other twenty-five in pots with potting soil and a specific amount of compost added; this is the experimental group. Place the pots under grow lights. After germination, measure the height of the plants at set intervals (e.g., every two days) for a set amount of time (e.g., two weeks). The IV is the presence or absence of compost. The DV is the height of plants. Twenty-five plants per group is a good sample size; all obvious variables are controlled. The experiment is simple and specifically described, so it can be replicated. The seeds were assigned randomly; there is no obvious bias in the experiment.

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suppose you are studying a fruit fly's DNA and you discover a gene for antenna length on chromosome 2. what word describes its l
soldier1979 [14.2K]

Answer:

<h2>In all flies,on the same Locus, on chromosome 2 at the same place you find the gene for antenna length.</h2>

Explanation:

In all fruit flies ,on the same  Locus, on chromosome 2 at the same place you find the gene for antenna length

All fruit flies contain same amount of gene and chromosomes, so the location of all gene in all fruit flies found at the same location.

A gene for antenna length in all fruit flies on chromosome 2 is present on same the location.

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3 years ago
2. In a certain fish, blue scales (BB) and red scales (bb) are codominant. When a fish has the
Evgen [1.6K]

Upon crossing BB with bb, we will get a hybrid of Bb.

  • Codominance is a phenomena in genetics where two alleles (different forms of the same gene) express themselves equally in an organism. As a result, characteristics linked to each allele are shown at the same time.
  • The MN blood group system in humans is an illustration of codominance. M and N alleles control the MN blood type. Red blood cells from people who are homozygous for the M allele carry a surface molecule known as the M antigen. On their red blood cells, those who are homozygous for the N allele contain the N antigen. A heterozygote is a person who carries both antigens.
  • (a) Genotype of blue scales fish will be BB.
  • (b) Genotype of blue scales fish will be bb.
  • (c) Genotype of blue scales fish will be Bb.

So, in this case B and b alleles will express equally.

Learn more about co-dominance:

brainly.com/question/3578928

#SPJ9

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