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## How many possible combinations of chromosomes could exist in its gametes with no crossing over?

There are **8,324,608 possible combinations** of 23 chromosome pairs. As a result, two gametes virtually never have exactly the same combination of chromosomes. Each chromosome contains dozens to thousands of different genes.

## How many possible combinations of chromosomes are there for human gametes?

Humans have 23 pairs of chromosomes. That means that one person could produce 2^{23} different gametes. In addition, when you calculate the possible combinations that emerge from the pairing of an egg and a sperm, the result is **(2 ^{23})^{2} possible combinations**.

## How many possible gametes can be formed following meiosis excluding crossing over events from an original cell that contains a diploid number of six 2n 6 )?

from an original cell that contains a diploid number of 46 (2n=46)? 3. How many possible gamete types can be generated through the process of crossing over alone? 4.

…

Mitosis (begins with a single cell) | Meiosis (begins with a single cell) | |
---|---|---|

# daughter cells produced | 2 | 4 |

_{#}_{chromosomes}_{in} daughters |
46 | 23 |

## How many different combinations of chromosomes can be packaged by in a gamete by an organism with a diploid number of 8 2n 8 )?

The diploid number of chromosomes in a certain animal is 8 (2n = 8). How do the four pairs of homologous chromosomes align and separate during meiosis? They align and assort independently to form any of **16 different combinations**.

## How many different gamete cells can be produced from a diploid cell with diploid number 2n 4?

-So Organisms with 2n=4 chromosomes can produce 4 **(2^2=4) different** combinations of chromosomes in their gametes (with independent assortment, alone). Organisms with 2n=6 can produce 8 (2^3=8) different gamete types.

## How many different combinations are possible in the gametes of an organism whose haploid number is 3?

With three pairs of chromosomes, there are 2^{3} = **8 combinations**.

## How many possible gametes are there?

The number of different possible gametes produced by the diploid genotype (AaBbCcDdEe) is 2 x 2 x 2 x 2 x 2 = **32** (2 for each pair of heterozygous genes).

## How many different combinations of maternal and paternal chromosomes are possible for the gametes?

Maternal and paternal chromosomes are randomly distributed on either side of the metaphase plate. So for each pair there’s a 50/50 chance as to which side the homologs will go on (8.17). We have 23 pairs each with 50/50 probabilities. That works out to **2 ^{23} possible combinations** of gametes from one human individual.

## How many combinations of chromosomes would be possible in the gametes formed when a cell with eight chromosomes undergoes meiosis?

1. How many different chromosomal combinations can result from meiosis in a species that has a diploid (2N) number of 8? Assume no crossing-over occurs. **Sixteen different combinations**.