XBT is a gene that controls the development of the body, specifically by determining the number c limb structures formed in the A. carolinensis lizard. What type of gene is XBT? noncoding O housekeeping toolkit constitutive
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- if you replaced the hox genes that are normally expressed in a dolphin fin with the hox genes that are normally expressed in a cat's paw, you would get a dolphin with kitty cat paws. ( True or false)Besides a mutation for red color, what other mutation occurred in the lizard populationEach of the vertebrate Hox genes is present in 4 copies of the genome (TRUE or FALSE)
- The gene for fangs is recessive, yet most of the dragons have fangs. How can this happen? [Hint. The gene that causes dwarfism (achondroplasia) in humans is dominantIf a gene is located on the X chromosome of a mammal,it isa. expressed only in females.b. expressed only in males.c. sex-linked, with females more likely to show recessive traits.d. sex-linked, with males more likely to show recessive traits.Which of the following is NOT true regarding Hox genes. A) The sequence they appear in their corresponding chromosomes is the same order of their expression along the front to back of the developing animal. B) Homologues of the same Hox genes found in flies can be found in humans. C) Hox genes are only found in animals with bilateral symmetry. D) Animals with more complex body plans tend to have more sets of Hox genes through gene duplication events.
- What type of genes regulate the development of anatomical segments and structures in an organism, directing the development of different body regions early in the organism's development? A. Homeotic genes B. Anatomical genes C. Allelic genes D. Methylated genesIn the Central Nervous system, Hox genes are involved in segemation of... ( Choices are cerebral cortex,cerebellum,mid-brain, or rhombomeres)Which of the following statements about gene imprinting is correct?(a) Gene imprinting is a male reproductive strategy that can reduce the lifetime reproductivesuccess of females.(b) Gene imprinting is a female reproductive strategy that can reduce the lifetimereproductive success of males.(c) Gene imprinting is found only in placental mammals.(d) All statements are correct. A. (a) and (c) B. (a) and (b) C. (b) and (c) D. (d)
- Which of the following sets of genes are most likely to have pleiotropic effects? Transcription factor genes Metabolic pathway genes Pigmentation genes Circadian rhythm genesA mutation that alters the embryonic expression pattern of an _______ may lead to major differnces in the adult form. a. derived trait c. homologous structure b. homeotic gene d. analogous strcutureThe combination of genes present in the cells of anindividual is called the ___________.