True or false

being heterozygous for a gene may cause only the dominant allele to be expressed, but the recessive gene may be passed to offspring that express it

being heterozygous for a gene may cause only the dominant allele to be expressed, but the recessive gene may be passed to offspring that express it

True :D

Explanation:

The Precambrian covers almost 90% of the entire history of the Earth. It has been divided into three eras: the Hadean, the Archean and the Proterozoic. The Precambrian Era comprises all of geologic time prior to 600 million years ago.