The random alignment of maternal and paternal homologous chromosomes during metaphase i is one of the ways genetic variability among gametes comes about. for example, it is possible for an organism with 4 pairs of homologous chromosomes to produce gametes with up to 16 different combinations of maternal and paternal chromosomes. in the case of humans with 23 pairs of chromosomes, there are over 8 million possible combinations. how many possible combinations of maternal and paternal chromosomes are possible in the gametes of an organism with a diploid number of 16 chromosomes ?

256 possible combinations.

Explanation:

Homologous chromosomes consist of one maternal chromosome and one paternal chromosome that pair up during meiosis. They have the same genes in the same loci, but not alleles.

During metaphase I they line up in a random order, this means there are different combinations of maternal and paternal chromosomes for each gamete.

There are 2 alternatives for each pair of homologous chromosomes. We calculate then the number of gametes with different chromosomic combinations as 2^n, being n the number of homologous pairs or haploid number of an organism.

For an organism with 4 pairs of homologous chromosomes: 2^4 = 16

For humans with 23 pairs of chromosomes: 2^23 = 8,388,608‬

For an organism with a diploid number of 16 chromosomes, we have 8 pairs of homologous chromosomes (haploid number, one set of chromosomes):

2^ 8 = 256 possible combinations of maternal and paternal chromosomes.

correct answer: biotic and abiotic limitations

carrying capacity is defined as the total number of an organism who can be supported in a given area within the natural resources limit and without harming or degrading the natural, economic or the cultural environment present for the future generations.

carrying capacity is determined by the limiting factors, which are known to affect the natural resources available. it may include water, nutrients, minerals, space, light etc.

explanation:

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and after water is usually warmed by the sun the water temperature raises and then evaporates .