A researcher believes that she had found the gene that determines weight in mice. However, when she removes this gene from all of the cells in an animal, she observes that there is no difference between its weight and that of untreated mice. Furthermore, she can observe no other atypical phenotypes in the subject mouse. How can this be explained?

Weight in mice is influenced by multiple alleles of the same gene.

Weight in mice is a polygenic trait.

Only the recessive allele of the gene determines an animal's weight.

The gene removed from the animal is pleiotropic.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Acquired mutations can result from radiation pollution toxins inheritence select all that apply

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays