Answer:
All of the above
Explanation:
U 2 can help me by marking as brainliest.......
Answer:
Recessive lethal genes can code for either dominant or recessive traits, but they do not actually cause death unless an organism carries two copies of the lethal allele. Examples of human diseases caused by recessive lethal alleles include cystic fibrosis, sickle-cell anaemia, and achondroplasia.
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Each chromosome contains one molecule.
Answer:
I believe they are called a population, tell me if I'm wrong.