Question

which of the following set of combinations we get only homozygous green plants? ( )

A) YY and YY B) Yy and Yy C) yy and yy D) yY and yY​

Answer 1

we get only homozygous green plants in YY and YY

Option a

Explanation:

• Homozygous green plants are found only when both the early which are present in a particular gene is same. Green is the dominant character which is present in the the colour of the plant.

• As a result of this it is Homozygous when both the allele are same. The first combination which is given in the option is the only set of combination where there is no heterozygous plants formed.

To know more about allele,

Explain why a recessive allele is unable to express itself in a ...

https://brainly.in/question/6680386

Answer 2

Answer: All homozygous can be obtained from the cross between YY and YY.  ( Option A)

• Gregor Mendel , conducted hybridisation experiment on garden peas for 7 years and proposed the law of inheritance in living organisms.
• Cross between two is shown in image given below.

Explanation:   In Mendel experiment green is the dominant character and hence it will express itself even  in heterozygous condition. (Yy = Green)

• But to obtained all homozygous green plants a cross between (YY and YY) is feasible.
• The allele which fails to express itself in the presence of dominant allele is known as recessive allele. For eg: Yy = green ( where y is recessive).