Answer:
Explanation:
Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another
Answer:
1. Designing of the target vector.
2. Insertion of the target vector into the embryonic stem cell
3. Selection of the cells
4. Injecting selected cells into the new cells
5. Breeding of mouse with a normal mouse
Explanation:
The target vectors are made by inserting markers into them. The target vector is inserted into ES cells. The vector generally recombined with the target gene and knock-out that gene. Sometimes, recombination of vectors occurs at incorrect place.
The cells survive in the presence of markers only if the target gene is incorporated with target vector. The cells with the target vector are injected into a normal developing embryo of mouse.
The developed mouse will consist of heterozygous knockout cells and its own cells. The normal mouse is bred with this chimeric mouse. The offspring of these mouse are able to transfer knock-out gene to next generation.
Answer:
Well a living thing is defined as in a scientific term, the ability to reproduce. Living things like humans, animal and even plants are considered living because we can reproduce, even plants by making new seeds in the plant growth process. Non living things are things that won’t be able to reproduce, like for example a rock can t reproduce since it’s not living and it just “lacks the abitlity to”.
Answer:
3.
Explanation:
There is no diversity in asexual reproduction.
Answer: A.) The salamander has lungs, but not claws or nails.
Explanation: I just took the same quiz & it was right.
