Biology, asked by anamika2176, 10 months ago

A plant has two varieties, one with red petals and the other with white petals. When these two varieties are cross-pollinated, all the offsprings have red petals?
(a) Which gene is dominant?
(b) Choose suitable letters to represent the two genes.

Answers

Answered by siddupatil09
9

Explanation:

a)athe gene for the red Petals is dominant, while the gene for White Petals is recessive.

b)the gene for red Patel is represented by R and the gene for White petals is represented by r.

Answered by Phoca
6

Genes controlling the red color (Dominant) with genotypes RR

Explanation:

  • In Mendelian crosses, the Dominance effect is observed when one allele masks or suppresses the effect of another allele.
  • The dominant allele is denoted by capital letter whereas the recessive allele is denoted by a small letter.
  • In the given question since the produced offsprings are of red color only, therefore, the red color gene is dominant.
  • Now, let us assume the red color is determined by homozygous pair of alleles: RR and white by rr.

Making a cross between them  

    R   R

r   Rr  Rr

r   Rr  Rr  

  • All offsprings produced are Rr (Red color)

Learn more about Mendelian crosses:

Mendelian principles: brainly.in/question/6612665

Mendelian crosses: brainly.in/question/5744095

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