Biology 1-
Se Home Spring 2120
English
Distinguishing Types of Natural Selection
Identify which type of natural selection is described in each case below
Results in the evolution of the species
Results in new species
Favors traits at the two extremes
No increase in diversity
One extreme trait is favored
Diversity decreases
Diversity increases
DONE
) Intro
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unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.