<span>Earth went through a period of hot and also dry conditions and a wide spread drought.These conditions favored reptiles and therefore causing them to evolve during those conditions. Hope this helps :)</span>
Answer:
Chromosome number in gametes- haploid (n)
Chromosome number in zygote- diploid (2n)
Explanation:
Sexually-reproducing organisms make use of gametes to reproduce. The gametes are produced via the process of meiosis, which is a cell division that results in daughter cells (gametes) that have their chromosomal number reduced by half. A diploid (2n) organism i.e. possess two set of chromosomes undergoes meiosis to produce haploid (n) gametes i.e. contains one set of chromosomes. The male parent produces haploid sperm while the female parent produces haploid egg.
During reproduction, these haploid gametes (sperm and egg) combine in a process called FERTILIZATION to produce a diploid ZYGOTE. The diploid zygote then divides and grows into the full organism. Hence, since a zygote is formed by the fusion of two haploid gametes (sperm and egg), it contains a diploid chromosome number i.e. sperm (n) + egg (n) = zygote (2n)
Answer: farms, laundry detergent‘s,pet waste, water treatment plants
Explanation:
Endothermic means it requires the absorption of heat or it is dependent on has the ablity to generate internal heat
exothermic means an animal that cna regulate its body temperature (usually by exchanging it with its surrounding environments)
so your answer is excothermic
Answer:
From the given choices, the most appropriate answer would be B. Anaphrase 1.
Anaphase I is the stage of meiosis I in which homologous chromosomes are pulled towards opposite poles with the help of spindle fibers.
The chromosomal defect which can occur in this stage is "unequal distribution of chromosomes in two daughter cells".
It may occur when the spindle fiber fails to attach to a particular chromosome.
It leads to the production of daughter cell or gamete with extra or decreased number of chromosomes.
When these types of gametes fertilize with other gametes, it may result in aneuploidy in the resulting offspring.
