Homeotic genes - Study guides, Class notes & Summaries

Homeotic genes contain a homeobox sequence that is highly conserved among very diverse species. The homeobox is the code for that domain of a protein that binds to DNA in a regulatory developmental process. Therefore, you would expect that _____. - ️️homeotic genes are selectively expressed as an organism develops A current view of how the human and chimpanzee can share most of their nucleotide sequence yet exhibit significant phenotypic differences is that many of the most important sequen...

Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers The role of a metabolite that controls a repressible operon is to - CORRECT ANSWER e) bind to the repressor protein and activate it The tryptophan operon is a repressible operon that is - CORRECT ANSWER E) turned off whenever tryptophan is added to the growth medium. Which of the following is a protein produced by a regulatory gene? - CORRECT ANSWER D) repressor A lack of which molecule would result in the cell's ina...

AP Biology Final Exam Review With Verified Solutions. Emergent properties - answernew properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases negative feedback - answera mechanism of response in which a stimulus initiates reactions that reduce the stimulus positive feedback - answera physiological control mechanism in which a change in a variable triggers mechanisms that amplify the change inductive...

LIFE 120 UNL Biology Practice Exam 4|33 Questions with Verified Answers Transcription in eukaryotes requires which of the following in addition to RNA polymerase? A) the protein product of the promoter B) ribosomes and tRNA C) aminoacyl synthetase D) start and stop codons E) several transcription factors (TFs) - CORRECT ANSWER E During splicing, which molecular component of the spliceosome catalyzes the excision reaction? A) RNA B) DNA C) protein D) sugar E) lipid - CORRECT ANSW...

1) Within a sperm cell, what is the function of an acrosome? - ANS Contains enzymes needed to penetrate egg cells 2) How do membrane proteins on both an egg and a sperm cell function to keep fertilization species-specific? - ANS A fragment from the egg-wall receptor binds to binding proteins on the sperm only if it is the same species 3) Explain the steps of the acrosomal reaction. - ANS i. Sperm Contacts jelly layer ii. Reaction begins: Release of digestive en...

AP Biology exam cram study guide 2024 emergent properties new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases inductive reasoning reasoning based on observed patterns polymer large compound formed from combinations of many monomers meiosis a process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus, which...

CSET SUBTEST II: SCIENCE 100% SOLUTIONS Morphogenesis - ANSWER When cells divide, the cell will change shape/organization many times by going through a succession of stages -A single-celled egg develops into a complex, multi-cellular organism by dividing and going through many stages in this process Order of Embryological Development - ANSWER Morula-->Blastula-->Gastrula-- >Neurla Zygote-Cleavage--Morula-Blastula, Gastrula, Neurla, Organogenesis Fertilization triggers the...

BIOMG 1350 – Final Exam Questions With Correct Answers Bicoid - answerthese genes encode cytoplasmic determinants in the anterior tip of the embryo syncytial blastoderm - answerthe stage of embryonic development during which bicoid expression is significantly reduced syncytial blastoderm - answerstage of embryonic development in which nuclei move to the periphery of the cell, forming a single layer, with each nuclei barely separated from its neighbors cellular blastoderm - answerstage ...

Bio 117 exam 2 quiz all answers correct Which of the following is NOT a characteristic of ALL animals? A. Heterotrophic B. Together, they form a monophyletic group. C. Multicellular organisms D. Cells lacking cell walls. E. All animals have true tissues and organs. ️All animals have true tissues and organs. Which of the following are characteristics of Phylum Cnidaria? (Select All that Apply) A. Specialized stinging cells B. True Tissues C. Complete ...

AP Biology Final Exam Review Questions and Answers latest Verified emergent properties - CORRECT ANSWER-new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases negative feedback - CORRECT ANSWER-a mechanism of response in which a stimulus initiates reactions that reduce the stimulus positive feedback - CORRECT ANSWER-a physiological control mechanism in which a change in a variable triggers ...