Question

which one of the following genotypes is homozygous dominant and which one homozygous recessive in regard to tongue rolling : Rr,rr,RR​

Answer 1

homozygous dominant is RR (usually homozygous means both alphabet in caps or both in small)
(if dominant means both will be caps)

homozygous recessive is rr(usually homozygous means both alphabet in caps or both in small)
if recessive both wil be in small letters

Answer 2

RR homozygous dominant while rr is homozygous recessive in regards to tongue rolling.

Explanation:

• The term homozygous means same types of alleles which carry a certain trait and are responsible for dominant or recessive character.
• Generally two capital letters (RR) represent the homozygous dominant gene while two lower case letters (rr) represent the homozygous recessive gene characters
• One lower case and one upper case letter (Rr) represent hybrid gene and are mixed form.

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