Question

In a pine’s life cycle, hybrid “1” pine tree the needles were found to have the
alleles Ll (heterozygous) producing long needles. In a hybrid “2” pine tree, the
needles were found to have the alleles ll (homozygous recessive) producing
short needles. If a pollen from hybrid “1” pollinated hybrid “2” to form a hybrid “3”
plant which about 50% were long needle and 50% were short needle. Give the
genotypes for the following structures found in the life cycles of these plants:
Genotype of the pollen grain’s nucleus of plant hybrid “1”?
Genotype of archegonia of plant hybrid “2”?
Genotype of megaspore mother cell of plant hybrid “2”?
Genotype of sporophyte of plant hybrid “3”?
Genotype of microspores of plant hybrid “1”?
Genotype of hypocotyl of plant hybrid “3”?
Genotype of seed coat of plant hybrid “2”?
Genotype of ovary of plant hybrid “2”?

Draw and label the parts of the entire ovule and its content’s at maturity (before
fertilization) of the two Divisions “angiosperm” and “gymnosperm (pine)”. Explain
what happens to the various parts of each ovule. Give differences between
these two ovules.