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emmainna [20.7K]
3 years ago
7

Once a scientific idea is developed, it does not change. right?

Biology
2 answers:
Phoenix [80]3 years ago
4 0
Yes in fact they can change up the idea to make it a better one
Darina [25.2K]3 years ago
3 0
It can change to a better idea.
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How do adaptations increase the fitness of a population?
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Answer:

Adaptations develop when certain variations or differences in a population help some members survive better than others. The variation already exist with the population, but the variation comes from a mutation, or a random change in an organism's genes.

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Dihybrid Practice Problems
Lisa [10]

Answer:

a. Genotype of the parents are; Rr and rr

b. Please find the explanation to A below

Explanation:

This question involves a single gene that codes for flower color in a plant. The allele for red flower (R) is dominant over the allele for white flower (r). This means that a plant that is heterozygous for flower color (Rr) will be red.

In a cross between a plant with red flowers and white flowers, the phenotype of the offsprings is represented as: 37 plants with red flowers and 41 plants with white flowers. Observing from this number, one would realize that the phenotype ratio is equivalent to 1:1. This phenotypic ratio is only possible when the parent with red flower is heterozygous for the gene i.e. Rr. Hence, the genotype of the parents are: Rr and rr.

b) If one were to cross Rr (red flower) × rr (white flower), the phenotypic ratio of red to white offsprings will be 1:1. Hence, judging from the ratio got from the cross of the two parents above (1:1), the parental genotypes are Rr and rr.

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3 years ago
What is the difference between regular and irregular dense tissue
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The connective tissue gives support and structure to other tissues and organs. Diverse cells, fibers and ground substance (matrix) are components of the connective tissue. The connective tissue is classified in: loose or dense. As their names imply, loose connective tissue has fewer cells and fibers per area whereas in the dense connective tissue the cells and fibers are tightly packed. The dense connective tissue is further divided into regular and irregular. The main difference is the arrangement of the fibers in these tissues. In the regular dense connective tissue, all the fibers are oriented in one direction. In contrast in the irregular dense connective tissue the fibers have multiple orientations

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4 years ago
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