EASY POINTS! In peas, long stem (A) is dominant over short stem (a). A heterozygous, long stem plant (Aa) is crossed with a homo-zygous, short stemmed plant (aa).

Which of the above squares represent plants that are heterozygous?

Question 9 options:

Box 1

Box 1 and box 2

Box 1 and box 3

Box 2 and box 3

It is the physical appearance of the trait, whether the plant has Long stem or short stem.

A genotype refers to the genetic characteristics of an organism's trait, if it is heterozygous or h o m o-zygous, recessive or dominant. This question is basically based on the Genotype, asking for the heterozygous plants which is a genotypic characteristic.

Allele Long stem A is dominant over short stem a

Pea Plant 1 has genotype Aa

Pea Plant 2 has genotype aa

The question asks for how many heterozygous plants are present in the punnet square of pea plant 1 and pea plant 2.

Heterozygous Plants means those plants which have two different alleles that means One dominant allele (i.e. A here) and One recessive allele (i.e. a here). These Organisms inherit a different version from each parent. In a heterozygous genotype, the dominant allele overrules the recessive one.

If we look at the punnet square given in the attachment, the Box 1 and 3 have genotype Aa which is a HETEROZYGOUS DOMINANT PLANT while box 2 and 4 have a genotype aa which is a HOMO-ZYGOUS RECESSIVE PLANT thus the answer is Box 1 and 3

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )