Gene mapping refers to the techniques used in molecular biology to determine the position of genes on the same chromosome. Gene mapping can be used to develop linkage analysis.
- In this case, the geneticists can use GENE MAPPING techniques in order to determine the position of specific mutations that cause Parkinson's disease.
- Two or more genes are linked when they are close on the same chromosome, thereby being inherited as a unit (i.e., as a linkage block).
- Linkage analyses enable us to determine the position of linked genes on the same chromosome.
- Gene mapping techniques include the use of molecular markers whose segregation evidence the position of target genes to be mapped.
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Answer:
Larva and pupa is present in complete metamorphosis while nymph is present instead of larva and pupa in incomplete metamorphosis.
Explanation:
Complete metamorphosis has four stages i. e. egg, larva, pupa, and adult while the incomplete metamorphosis has three stages i. e. egg, nymph, and adult. Grasshopper, dragonfly, cicada and cockroach have incomplete metamorphosis while ladybug
, housefly, butterfly and honeybee have complete metamorphosis. Both type of insects lay eggs and after hatching a baby insect comes out called larva. After sometime this larva transforms from immature to mature, this stage is known as pupa. After pupa, the insect converts into an adult which is ready for reproduction. Nymph is a stage that comes in place of larva and pupa in incomplete metamorphosis. in this stage, the insect is small in size and lack of wings but in adult stage the wings appear.
Aristarchus’s model not accepted because at that time it was believed that the earth was at the center of the universe.
<h3>What is Aristarchus’s model?</h3>
Aristarchus make a model by placing the place of the Sun in the middle of the solar system and placed the planets around the Sun.
So we can conclude that Aristarchus’s model not accepted because of the believed that the earth was at the center of the universe.
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Assuming that you're referring to forest ecosystem, the two ecological benefits of this ecosystem are :
- it provides habitats for many organisms
- It provide Oxygen supply for the world
Lever is responsible for supplying glucose to all parts as it contain polymer of glucose called as glycogen.
