Question

A four o'clock flower has one allele for red flowers and one allele for white flowers. A heterozygous flower expresses pink petals. Which of the following types of inheritance is demonstrated here?

a
Complete dominance
b
Incomplete dominance
c
Codominance
d
Red is dominant and white is recessive

Answer 1

@faithkristine

Answer 2

This is the same concept as in your previous question so I will copy paste my explanation from there

https://questioncove.com/study#/updates/608dc6b147af1ce052272c00

You need to know the definitions of the different types of inheritance

So read the definitions on here
https://ib.bioninja.com.au/standard-level/topic-3-genetics/34-inheritance/modes-of-inheritance.html

https://biologydictionary.net/incomplete-dominance/#:~:text=Incomplete%20dominance%20is%20when%20a,semi%2Ddominance%20or%20partial%20dominance.

Essentially,

Complete dominance means that a dominant allele will mask the effect of the recessive allele
So an example: let's say black hair (B) is dominant and blonde hair (b) is recessive

if you were heterozygous Bb then that dominant black hair allele would mask the recessive blonde hair allele. Your hair would be just black.

incomplete dominance is when the dominant allele doesn't completely mask the recessive allele so just using the same hair colors
if we had Bb, then instead of having black hair, you would have a hair color that's a mix of black and blonde so maybe something brown.

Finally, in codominance you would see the effects of both alleles.
I will continue to use the hair color examples. So if you had an allele for black hair and blonde hair- then it it was codominance, you would have hair that has both black and blonde hair.

So to clarify, incomplete dominance would be a mix of the two colors. While in codominance, you have both the original colors separately so imagine half the hair is black and half is blonde.

Answer 3

So if you have one allele for red and another one for white

and when you have both alleles, the colors instead mix to give you pink

what kind of inheritance would that be?