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Zanzabum
3 years ago
10

Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must-

Biology
1 answer:
Tresset [83]3 years ago
6 0
A- to collect relevant evidence
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A variety of opium poppy (Papaver somniferum L.) having lacerated leaves was crossed with a variety that has normal leaves. All
Ainat [17]

Answer:

The correct answer is-

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

2. Two genes, with a dominant allele at either or both loci.

Explanation:

The given information gives THE following data:

Dominant: Lancerate leaves - AABB

Recessive: normal leaves - aabb

F1 has - all Lacerated leaves - AaBb

F2 by selfing F1:

         AB               Ab         aB         ab

AB    AABB        AABb      AaBB    AaBb

Ab     AABb       AAbb      AaBb     Aabb

aB     AaBB       AaBb       aaBB     aaBb

ab     AaBb       Aabb       aaBb      aabb

Here, 15/16 = lacerate which is 0.94 which is equal to the value of lacerate given in the question - 249/265 = 0.94

And normal 1/16 = 0.062 is almost same as 16/265 = 0.060

Thus, the genotypes of -

F1 -  AaBb (lacerate)

F2 - A_B_; A_bb; and aaB_ (lacerate)

     - aabb (normal)

5 0
3 years ago
Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly
kaheart [24]

Answer: Comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

Explanation:

A hypothesis refers to an assumption, which is proposed for the sake of an argument which is tested to ascertain if it's true.

The hypothesis can be tested by comparing the rates of predation on whitefly nymphs coated with a nontoxic dye versus the undyed whitefly nymphs.

3 0
3 years ago
Can ground tissue do photosynthesis
Damm [24]

The major cells of the ground tissue are parenchyma cells, which function in photosynthesis and nutrient storage. They have thin walls, many chloroplasts, and large central vacuoles, and they form the mass of most leaves, stems, and roots. Another cell of the ground substance is the sclerenchyma cell.

Hope that helped! sorry if its wrong

3 0
3 years ago
Where is sucrose transported to in plants? <br> (name like either roots, leaves, where?)
Anuta_ua [19.1K]
To all parts but particularly u can say phloem sap
4 0
3 years ago
If r(x) = 3x – 1 and s(x) = 2x + 1, which expression is equivalent to r over s (6)
Maksim231197 [3]

3(6)-1

------

2(6)+1 is the answer

3 0
3 years ago
Read 2 more answers
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