When an f1 plant undergoes meiosis, what gamete types will it produce, and in what proportions?

When an f1 plant undergoes meiosis, what gamete types will it produce, and in what proportions? use your understanding of mendel's law of segregation to label each gamete possibility as "correct" or "incorrect."?


A cross between a homozygous yellow line (YY) and a homozygous green line (yy) will result in F1 plants that are heterozygous (Yy) for this trait and produce yellow seeds. If F1 generation is crossed only gamete possibility B. would be correct A. 3/4 Y, 1/4 y incorrect B. 1/2 Y, 1/2 y correct C. 1/2 YY, 1/2 yy incorrect D. 1/2 Yy, 1/2 Yy incorrect E. 1/4 Y, 3/4 Y incorrect F. 1/2 y, 1/2 y incorrect

1 green 1 yellow 2 heterogeneous


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The F1 plant will produce 50% Y and 50% y gametes.


Meiosis is a process in which a cell reduces the number of chromosomes in half, in order to prepare for sexual reproduction. So, in this case we have a heterozygous plant which will end up with 50% Y and 50% y gametes according to Mendel's segregation law.

(b) 1/2Y 1/2y: Correct

Rest options are incorrect.


According to Mendel's law of segregation, the dominant and recessive alleles of a gene present together in a heterozygote do not get mixed and are segregated during gamete formation. Gametes are always pure and carry one allele of each gene. A gamete from a plant with "Yy" genotype cannot have two copies of either of the alleles.

The alleles of a gene are present on homologous chromosomes. Separation of homologous chromosomes carrying Y and y alleles each would result in the segregation of these alleles during gamete formation. The resultant 50% gametes would have a "Y" allele and the rest 50% would have a "y" allele.

1 yellow. 1 green. 2 heterozygous


1/2 will be Y

1/2 will be y


In the process of meiosis haploid gametes are formed which means one gamete contains half the information from the parent cell (one set of 23 chromosomes). Because of Mendel's law (or principle) of segregation, if the parent has genotype heterozygous (Yy), it will be divided in two gametes in the following way:

Yy will be broken in to Y + y.

One gamete will be Y the other gamete will be y  

Gamete with alleles G and g in equal proportion i.e. 1/2 G: 1/2 g will be produced by the heterozygous pea plant.


Mendel discovered the principles that governs inheritance in his several experiments. One of these principles is tha LAW OF SEGREGATION which states that the alleles of a gene will separate into gametes during meiosis (gamete formation) in equal proportion. In essence, each gamete will contain only one type of allele.

In this case, the gene responsible for seed colour possess two contrasting forms (alleles). The yellow allele (G) is dominant over the green allele (g) because the yellow allele masks the expression of the green allele in a heterozygous state (Gg). Thus, when this heterozygous yellow pea (Gg) undergoes meiosis, each allele will separate into gametes in a way that each gamete will contain one type of allele i.e. either G or g in equal proportion. If four gametes are produced, two if them will contain G allele (1/2G) while the other two will contain g allele (1/2g).

Mendel was an Austrian monk whose researches laid the foundation of genetics. The experiments conducted by Mendel led him to the foundation of two laws which are named as the law of segregation and law of independent assortment.

According to the law of segregation, the two alleles of a gene segregate during the time of gamete formation and there are 50-50% chances of each of the alleles to be received by the gametes. Hence, there are 50% chances for Y gametes to be produced and 50% chances for y gametes to be produced.

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