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Every trait in an organism is influenced by which of the following?
Only maternal DNA
By both maternal and paternal DNA equally
More by paternal DNA than maternal DNA
Only paternal DNA
More by paternal DNA than maternal DNA
Every trait in a sexually reproducing organism is influenced equally by both maternal and paternal DNA. During fertilization, the sperm (paternal DNA) and the egg (maternal DNA) contribute an equal number of chromosomes to the zygote, ensuring that traits are inherited from both parents.
Every trait in a sexually reproducing organism is influenced equally by both maternal and paternal DNA. During fertilization, the sperm (paternal DNA) and the egg (maternal DNA) contribute an equal number of chromosomes to the zygote, ensuring that traits are inherited from both parents.
Think of building a house where two architects (mother and father) contribute an equal number of blueprints (chromosomes). Every room (trait) in the final house is constructed using specifications from both sets of plans.
MOM plus DAD equals 50/50 genetic blend.
2n=46 тАФ Total diploid chromosome number in humans
n=23 тАФ Haploid number contributed by each parent
In diploid organisms (2n), somatic cells contain two sets of chromosomesтАФone set inherited from the mother via the ovum and the other set inherited from the father via the spermatozoon. Each parent contributes 23 chromosomes (in humans), which pair up during fertilization. Consequently, genes encoding specific traits come in pairs (alleles), with one allele coming from the mother and the other from the father.
Mendel's laws of inheritance prove that offspring inherit one factor (allele) from the mother and one from the father for every character.
Cytoplasmic inheritance (such as mitochondrial DNA) is strictly maternal, but nuclear DNAтАФwhich governs the vast majority of organism traitsтАФis contributed equally by both parents.
Each parent provides equivalent sets of genes determining phenotypic traits.
Genetic counseling and pedigree analysis
Understanding hereditary diseases and Mendelian disorders
Animal and plant breeding programs
Option A is incorrect because maternal DNA alone does not determine all traits (ignoring nuclear paternal contribution).
Option D is incorrect because paternal DNA alone is insufficient without the maternal contribution.
C is correct тАФ Every trait in an organism is influenced by both maternal and paternal DNA equally.
Remember that while mitochondrial DNA is exclusively inherited from the mother, standard nuclear inheritance for Mendelian traits is always a 50:50 contribution from both parents.
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