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## How many possible gametes can be formed following meiosis?

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?

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

# daughter cells produced | 2 |
4 |

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

## How many possible gametes can be formed by each?

Hints For Biology 101 Exam #4

No. of homologous chromosome pairs (heterozygous genes) | No. of different gametes from each parent |
---|---|

2 (AaBb X AaBb) | 4 (2^{2}) |

3 (AaBbCc X AaBbCc) | 8 (2^{3}) |

4 (AaBbCcDd X AaBbCcDd) | 16 (2^{4}) |

20 pairs of chromosomes | 1,048,576 (2^{20}) |

## How many different combinations of chromosomes are possible in gametes after meiosis?

Since the separation of chromosomes into gametes is random during meiosis I, this process results in different combinations of chromosomes (and alleles) in each gamete. With 23 pairs of chromosomes, there is a possibility of **over 8 million different combinations** of chromosomes (2^{23}) in a human gamete.

## What is the number of possible gametes that can be formed due to independent assortment of chromosomes?

32. Since humans have 46 chromosomes or 23 homologous pairs, what is the number of possible gametes that can be formed due to independent assortment of chromosomes? The number of possible combinations of maternal and paternal chromosomes in the resulting gametes is **223**, or about 8.4 million.

## How many gametes are produced in F1 generation of a Trihybrid?

The F1 hybrid produces **8 types** of gametes.

## 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**.

## Do gametes have twice the number of chromosomes found in body cells?

In sexually reproducing organisms, the number of chromosomes in the body (somatic) cells typically is diploid (2n; a pair of each chromosome), twice the **haploid** (1n) number found in the sex cells, or gametes. The haploid number is produced during meiosis.

## How many different combinations of chromosomes are possible in the gametes of the fruit fly?

The number of different combinations of chromosomes that are possible in the gametes is 2n, where n is equal to the number of homologous pairs of chromosomes. For the fruit fly with four pairs of chromosomes, the number of possible combinations is **24 = 16**.