Question

1) In Lilac Flowers, Purple flowers (F) are dominant to White flowers (f). Identify if the genotype letters below.

Answer 1

1a & b:Homozygous Recessive = ff - white flowers
Homozygous Dominant = FF - Purple flowers
Heterozygous = Ff - Purple flowers

2:The punnet square will look something like this
Tt    Tttt     tt

50% Heterozygous (with long thorns)
50% Homozygous Recessive (with short thorns)

Answer 2

Answer

1. a) Homozygous recessive - ff

Homozygous dominanat- FF

Heterogyzous - Ff

b) Ff  - Purple

ff-  white

FF- Purple

2.

t t

T Tt Tt

t tt tt

Explanation:

1. Homozygous genotype of an species be it recessive or dominant consists of two simialr alleles representing the same trait.  

a)  

Homozygous recessive flower will have both recessive allele i.e ff and thus the phenotype of this flower will be “white color”

Homozygous dominant flower will have both dominant allele i.e FF and thus the phenotype of this flower will be “Purple  color”

Heterogyzous flowers will have one dominant and one recessive allele i.e Ff and its phenotype depends on the fact wether the flower is co dominant or autosomal dominant

b) The phenotype of the flower will be as follows  

Ff  - Purple

ff-  white

FF- Purple

2. The genotype of a homozygous recessive tree would be “tt”

The genotype of a heterogyzous tree would be “Tt”

The cross between the two will produce the following offsprings

t t

T Tt Tt

t tt tt