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Class Reptilia includes all reptiles, and Class Aves includes all birds.However, a cladistics approach would place birds in the same class with reptiles.Why would a cladistician classify birds and reptiles in a single class despite the behavioral and physical differences between the two?
Chromosome Variety
The range and differences in chromosome structures and numbers present within or across species, contributing to genetic diversity.
A Man's Sperm
The male reproductive cell or gamete, essential for fertilization and the inception of pregnancy.
A Woman's Ovum
The female reproductive cell, or egg, which, when fertilized by a sperm, can develop into an embryo.
Genotypic
Relating to the genotype, which comprises the entire set of genes in an organism that influence inherited traits.
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