Which of the following statements about dominant traits is correct? a) they are observed three-fourths as frequently as heterozygous traits. b) the dominant trait is typically masked by the recessive trait. c) they are observed less frequently than recessive traits. d) they increase in frequency over evolutionary time. e) the dominant trait is the one which is expressed.

Option E

Explanation:

A dominant trait is the characteristics associated with an allele which is expressed even if only one dominant allele is present in any allele pair.  

For example - Let us say that “R” represents the allele for red colour and “r” represents the allele for white allele.

Also, red colour allele is dominant over white colour allele.  

Thus in an allele pair “Rr” the colour expressed would be red as it is a dominant trait.  

The white colour alleles in an allele pair would be expressed only when both the alleles are recessive.  

Hence, option E is correct

integrated circuit (ic) is defined as a set of electronic circuits on one small flat piece of semiconductor material, normally silicon. a functional electronic circuit requires transistors, resistors, capacitors, inductors, etc., and the connections between them.

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation: