Microphthalmia is a condition that causes chickens to have very small eyes, but it only appears in hens. The condition is autosomal recessive. Microphthalmia is sex-influenced and not sex-limited because
A) it is recessive in males and dominant in females.
B) sex-influenced traits affect structures or functions that are present only in males or only in females.
C) it is not transmitted on a sex chromosome.
D) sex-limited traits affect structures or functions that are present only in males or only in females.
D) sex-limited traits affect structures or functions that are present only in males or only in females.
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Introns and an exons are removed from Gene 1 and inserted into Gene 2. What could happen to the protein product as a result of this mistake?
A. Nothing; Gene 2 receives all of its necessary exons so the protein will be translated correctly.
B. Only the first segment of Gene 2 will be translated into a protein, therefore the protein will be nonfunctional.
C. All of Gene 1 and 2 will be translated into proteins; there is an insertion of an Exon 2 from Gene 1 into Gene 2, the protein may not function properly. Natural selection may eliminate this protein or if the new protein provides a beneficial trait it may increase in prevalence in the population.
D. The start codon from Gene 1 is not present after intron removal, therefore this gene will not be translated.
E. Only Gene 1 will be translated into a protein since Gene 2 has an extra Exon # 2.
Scientists began to question the perfection of the
Chain of Being because of a. the discovery of new organisms in new parts of the world. b. the presence of body parts with no apparent function in some organisms. c. the existence of fossil forms. d. similarities in the structures found in different forms of life. e. all of these.
What are molecules such as viruses and bacteria that are foreign to the host and stimulate the immune system to react?
What will be an ideal response?
An organism like a green plant that can make its own food= _____________
Fill in the blank(s) with the appropriate word(s).