Embryo should be the answer
The correct option is this: The forelimbs (or possibly hind limbs) will be used for the new purpose of flight. This new function will arise through many gradual steps, and there will be aspects of the wing that reflect its history and are not perfectly suited for flight.
Adaptation refers to the physical or behavioral traits that an organism develop in order to enhance its suitability to its environment. Evolution on the other hand is always brought about by natural selection; organisms that are well adapted to their environments are naturally selected to survive, reproduce and pass their beneficial traits to their offspring. This is a gradual process that occurs over a long period of time.
For wings to develop in a four limbed organism, the organism has to start using the hind or the fore limbs for flight (New adaptive behavior). The genes that support this new behavior will be passed to its offspring and subsequent generations over a long period of time, until the wings are perfectly suited for flight.
The knowledge that can be gained from this is Knowledge about how genes work in vertebrates. Option D
<h3>What is genetic engineering?</h3>
Genetic engineering has to do with the procedure by which the genetic composition of an organism is modified. This is often carried out in a laboratory so as to produce new species of an organism or for scientific research purpose. We know that interaction of genes is determined by Mendelian genetics and the patterns of inheritance have been the constant subject of study.
As such, if a Zebrafish have been genetically engineered to glow in the dark, the knowledge that can be gained from this is knowledge about how genes work in vertebrates. We know that fish is an aquatic vertebrate because it possesses back bone as does other vertebrates (presence of vetebral column).
Learn ore about genetic engineering:brainly.com/question/13491558
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Th correct answer is Phloem.
The conducting tissues in plants is called as the vascular tissues. It is made up of more than one type of cell type, that is found in vascular plants. The important components of vascular tissue are xylem and phloem. The function of these tissues are to transport fluid and nutrients inside the plant. Phloem is responsible for the transportation of sugar, protein and organic substances in plants. The vascular plants grow higher than other plants because of this transportation system.
Answer:
50%
Explanation:
The allele for black fur (B) is dominant to the allele for brown fur (b).
- BB or Bb = black fur
- bb = brown fur
A male homozygous black mouse (BB) is crossed with a female brown mouse (bb). The male parent only produces<em> B</em> gametes and the female parent only produces <em>b</em> gametes. The F1 offspring will be 100% heterozygous Bb.
The F1 individuals will produce <em>B</em> and <em>b</em> gametes. If we cross the F1 individuals to each other (Bb x Bb), we'll get the following F2 offspring:
- 25% BB homozygous dominant
- 50% Bb heterozygous
- 25% bb homozygous recessive
So 50% of the F2 will be homozygous (BB or bb).
