Sexual Reproduction and Genetic Variation
Sexual reproduction introduces greater genetic variation among offspring because it involves the mixing of genetic material from two distinct parents.
- Parental Contribution: Each parent contributes half of the offspring's genetic material through specialized reproductive cells (gametes).
- Recombination: During fertilization, these gametes fuse, combining genes from both parents in a unique arrangement.
- Novel Combinations: This process creates new combinations of alleles, resulting in offspring that differ genetically from each other and from the parents.
This mechanism contrasts with asexual reproduction, where offspring are typically clones of the single parent, showing minimal variation.
Important Questions from Genetics and Evolution
Ancient hominids who are placed in the category of homo sapiens were -
A. Ergaster line
B. Cro - Magnon
C. Neanderthal
D. ProconsulsEach polynucleotide of DNA is made up of small units called _____________.
A group of similar organisms which are genetically distinct and reproductively isolated, is called a/an -
The adaptor molecule in the process of translation is :
All human beings have ________ pairs of chromosomes in the nuclei of their cells.
