Respuesta :
Answer:
Este es un ejemplo de dominancia incompleta. Es una ocurrencia genética que ocurre cuando un gen dominante no expresa su manifestación completa en el alelo recesivo en un alelo dominante heterocigoto.
Por lo tanto, ambos rasgos se manifiestan, lo que resulta en la combinación de los dos alelos para los colores (blanco y rojo). Se dice que el alelo rojo dominante exhibe un dominio parcial sobre el alelo blanco recesivo, y esto da como resultado el alelo completamente rosado.
De acuerdo con la ley mendeliana, las dos flores rojas son heterocigóticas. Por lo tanto, las flores rojas heterocigóticas dominantes deben ser R. El alelo blanco es recesivo (rr) enmascarado por el rojo R,
Sin embargo, cuando se cruzan los dos alelos heterocigotos rojos:
Los fenotipos están en forma de
RR, (1) rojo Rr Rr (2) rosa rr (1) Blanco.
Esto ocurre porque el alelo rojo dominante no era total / completamente dominante en el alelo recesivo blanco en cada uno, lo que da como resultado un alelo rosa (el tercer fenotipo)
This is an example of incomplete dominance.It is a genetic occurrence which occurs when a dominant gene does not express it full manifestation on the recessive allele in an heterozygote dominant allele.
Therefore,both traits are manifested which results in the blend of the two allele for colors(white and red).The dominant red allele is said to exhibit partial dominance over the recessive white allele.And this results in the entirely pink allele.
Based on Mendelian law the two red flowers are heterozygotes .Therefore, Red heterozygote dominant flowers should beRr.The white allele is recessive(rr) masked by the R-red,
However,when the two red heterozygote alleles are crossed:
The phenotypes are in the form of
RR,(1) red Rr Rr(2) pink rr(1)White.
This occurs because, the dominant red allele was not fully/completely dominant on the white recessive allele in each,which results in pink allele(The third phenotype)
Explanation:
The branch of science which deals with living beings is called biology.
The language of the question is different so it is difficult to answer it.
According to the data given in the question, they are discussing incomplete dominance because the ratio is 1:2:1.
The cross in which the dominant parent is not able to show its character and does not able to suppress the recessive gene. In this case, the plants show the character of somewhere in between both of the cases.
Therefore, they get the ratio of 1:2:1 which indicates the phenotype of red: pink: white.
Hence, the correct answer is incomplete dominance.
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https://brainly.com/question/19524691
