The answer to this question is not that difficult to comprehend, but in order to grasp the concept, we need to understand a few things first.
What is meant by an f1 plant
An F1, also known as Filial 1 plant is the first generation offspring which is produced by the process of cross-pollination of uniquely different parent types. F1 plant types are used for genetic studies and for selective breeding. The resultant F1 plant has a new phenotype.
In genetics, the term phenotype, derived from Greek origin, is referred to as a set of characteristics of an organism.
Understanding Selective Breeding, Homozygous & heterozygous plants
selective breeding can also be known as a man-made, artificial breeding process which can be performed on both, animals and plants. This is done to create an offspring that has the desired pack of characteristics. When two homozygous plants of different species are crossed together they produce a hybrid.
Homozygous and Heterozygous Plants
Homozygous plants are those which are cultivated using the same species. They carry a certain type of trait and are highly consistent with those particular characteristics from generation to generation.
Heterozygous plants are the exact opposite of what is mentioned above. Heterozygous has two different kinds of genes crossed together resulting in a plant that has mixed characteristics. In this kind of plants, the resultant mixture has two alleles (Parent Gene) in combination one can either be dominant, recessive, or co-dominant.
Plant Reproduction Process, Meiosis and Mitosis
Plants, unlike animals, have two types of the reproductive process
Asexual reproduction of plants is called mitosis. It is a process of cell division in which one cell divides into two duplicate daughter cells. The offspring produced in this type of reproduction is identical to the parent. One major disadvantage associated with this type is that the plants, because of carrying the same kind of genes through generations cannot keep up with the environmental changes, thus the chances of survival of their species lessen.
It is the exact opposite of mitosis. In meiosis, the cell divides into four daughter cells instead of two containing half the amount of chromosomes as the original. Meiosis in plants produces spores. The spores then divide to produce haploid cells, gametes.
These gametes, egg in female (ovary) and Sperm in male (anthers) then form a union to make a zygote.
When an F1 Plant Undergoes Meiosis, What Gamete Types Will It Produce, And In What Proportions?
The parents of F1 plants are heterozygous, they have two alleles, YY and yy after going through meiosis the gametes produced would have half Y and Half y giving an offspring of Yy. The first gamete produced from the F1 generation will contain the dominant allele, the second would have recessive giving a ratio of fifty percent each.
According to the law of segregation, the two alleles of a characteristic would divide randomly which means that there’s always 50% chance of either allele ending up in a gamete.