Meiosis creates gametes (eggs and sperm) with only a single chromosome set (haploid or n) from parental cells with two chromosome sets (diploid or 2n). During fertilization, the haploid sperm (n) and egg (n) fuse, producing a diploid zygote (2n). The cells of the zygote then divide by mitosis (which does not change the ploidy level) to produce an adult organism (still 2n) of the next generation.
<span>In sexual life cycles, meiosis and fertilization keep the number of chromosomes constant from generation to generation. </span>
Answer:
Behavioral isolation
Explanation:
The reproductive isolation refers to the mechanism which prevents the interbreeding between the organism. The mechanisms of reproductive isolation can be categorised into two types: The pre-zygotic and post-zygotic barriers.
The prezygotic isolation mechanisms are the behavioural, the habitat, mechanical and gametic isolation.
In the given question, the type of mechanism involved in the population of frog will be the "behavioural isolation" as the population of frog differ in their behaviour of mating ritual or mating calls which does not allow the frogs to mate.
Thus, Behavioral isolation is the correct answer.
Answer: A. tropical plants grow on Antartica during summer months.
Explanation:
<span>Crayfish and Annelids both have segments and most of them are aquatic.Crayfish live in freshwater, they have a joined head and thorax, or midsection, and segmented body. While a basic annelid form consists of multiple segments which each segment has the same set of organs. They survive in aquatic habitats or in damp soil.
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True bee casue if you open with your finger, it will get cut
