Biology Lab 143 Delgado Latest(2024/2025) Updated Questions and Answers with complete solutions.

Diploid - A cell the contains 2 sets of chromosomes Genes - unit of heredity on the chromosomes a cavity or depression - What are Lacunae? Allels - alternate forms of a genes Anaphase 1 - Duplicated homologous partners separate and move to opposite poles of cell Animal cells have a cleavage furrow and plat cells have a cell plate - What is the difference between animal and plant cell cytokinesi Aster - Microtubules that radiate outward from the spindle By the father - How is sex determine in Humans? Cell Cycle - Interphase(G1,S,G2)- Growth and DNA replication; M phase-Division of the Nucleus and C phase- Division of Cytoplasma. Centrioles - Cylinder of microtubules that assistant cell division Centromere - Constructed region where 2 chromatids are attached Centrosome - MTOC composed of 2 centrioles4 haploid cells - Meiosis starts with 1 diploaid cell and creates what? Chondrocytes - What are cartilage cells called? Chromatids - Identical pair of chromosomes DNA strands collagen, elastin and reticulin - What are the 3 protein fibers found in the matrix of connective tissue? Crossing Over - 4 chromatids exchange segments of genetic information(swap alleles) Dominant - are always expressed when they are present ex: brown eyes (B) Eruthrocytes - (red blood cells) - for gas exchange Fibroblast - cells found in connective tissue proper are called Gamet Ogenesis - the formation of gametes Gametes - Reproductive cells with haploid nucle Genotype - all alleles present in the cell for a particular trait ex: BB or Bb or bb Germ line cells - specialized cells in ovaries/testes that divide to produce the gametes. Gregor Mendel - the father of genetics? Haploid - A cell that contains only 1 set of chromosomesHeterozygous - two alleles of a gene pair are diferent (Bb) Histology - The study of tissues Homologous Chromosomes - 2 chromosomes of a pair (have the same genes) but may have different alleles(Alternative forms of genes) Homozygous Dominant - both alleles are dominant (BB) Homozygous Recessive - both alleles are recessive (bb) Hyaline Cartliage - Karyotype - visual representation of genes Leukocytes - (white blood cells)- for defense Metaphase - Metaphase 1 - Duplicated homologous pairs line up on the spindle equator Mitosis starts with 1 diploid cell and creates - 2 daughter cells Mitotic Spindle - Bridge of microtubules that help to separate and move chromatids Nervous -Neuron conducts nerve impulses. Glial cells support the nervous system. Cell body, Axon and Dendrite. - What is a neuron? What are its 3 parts? What are supporting cells? Number of cell layers and shape - What are the 2 criteria used to name epithelial tissues. Oogenesis - Formation of oocytes(egg) Osteocytes - What are bone cells called? Phenotype - physical expression of the trait ex: BB or Bb = Brown eyes bb = blue eyes Platelets - cell fragments, blood clotting. Prophase - Prophase 1 - Duplicated homologous chromosomes pair up(synapsis) and cross-over occurs. protects the body; covers the exterior of an organism, lines gut and other cavities - What is general function of epithelial tissue? Recessive - expression is masked in the presence of a dominant allele ex: blue eyes (b Separate the sister chromatids - What does Meiosis 2 do Separates the homologous pairs - What does Meiosis 1 do Spermat Ogenesis - Formation of sperm