Answer: a. Genetic recombination (crossing over)
b. Can also be explained in terms of crossing over
c. Non disjunction of homologous chromosomes in meiosis 1
Explanation:
The process that allows for the transfer of both the paternal and maternal materials to is the crossing over process that takes at meiosis 1 changing them to secondary spermatocytes. While they are still primary spermatocytes, they are still diploid cells having both the maternal and paternal chromosomes. But since the spermatozoon is an haploid cell, it is able to retail some of both parents chromosome by the crossing over event which takes place between homologous paternal and maternal chromosomes allowing them to exchange materials. Thus the chromosomal contents of the primary spermatocyte differs from that of the spermatozoon.
C. This can occur as a result of the one of the homologous chromosome pair refusing to separate at meiosis 1 with one gamete containing 4 chromosomes/8 sister chromatids and the second having 2 chromosomes/4 sister chromatids.
The category of organisms in a water ecosystem that includes the larger active swimmers is called Nekton. There are three classification of aquatic organisms that can be classified according to their location or habitat. One of them is Nekton which includes the larger swimmers in water ecosystem and the other two are Plankton and Benthos. Nekton are mostly fish or other living things that swim through the water.
A) DNA 1 by chromosomal mutation
DNA 2 by genetic mutation
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Endocytosis is taking stuff in while exocytosis is getting rid of the stuff and putting it out
Answer~ Epithelium (Epithelial)
Because the mucosa, or mucous membrane layer, is the innermost tunic of the wall. It lines the lumen of the digestive tract. The mucosa consists of epithelium, an underlying loose connective tissue layer called lamina propria, and a thin layer of smooth muscle called the muscularis mucosa.
