Biology Exam 2013 - Review UNIT: PATERNS OF INHERITENCE Describe Mendel’s experiments: * Chose a female parent; chooses a male parent; pollen is collected from the stamens and dusted onto the female parent stigma; pollen fertilizes the eggs. The ovary develops into the pod and eggs develop into the peas; when peas are planted they develop into pea plants. Why Pea Plants? * Easily obtained * Grown quickly; several generation of peas can be observed * Traits are easily visible
Premium Meiosis Mitosis Blood
occur in each stage. What are gonadotropins? What gland secretes them? Provide examples. After fertilization‚ where does an embryo implant? How is the sex of a child determined? What can happen to maternal and paternal genes during crossover of meiosis? Identify the role that each of these hormones plays in reproduction: LH‚ FSH‚ estrogen‚ progesterone‚ testosterone What is required for sperm activity? What prevents polyspermy? What does amniotic fluid contain? What are the important functions
Premium Reproductive system Uterus
nucleus (where most DNA are found)‚ mitochondria‚ chloroplast 3) - Translation requires ribosome‚ mRNA‚ tRNA (anticodon) and amino acids - DNA template‚ polymerase for transcription 4) Mitosis generates daughter cells that are identical Meiosis – homologous recombination 5) DNA coding sequence: 5` GGGCCCTTTAAA 3` DNA template: 5` TTTAAAGGGCCC 3` 6) Insertion - Additional A (shifting the reading frame of codon) 7) Kevin is a carrier of the disease (heterozygous)‚ wife (homozygous
Premium DNA Gene
cross showing independent assortment is expected to be A) 1:2:1. B) 3:1. C) 9:1:1:3. D) 3:9:9:1. E) 9:3:3:1. 5) Mendel’s law of independent assortment states that A) chromosomes sort independently of each other during mitosis and meiosis. B) genes sort independently of each other in animals but not in plants. C) independent sorting of genes produces polyploid plants under some circumstances. D) each pair of alleles segregates independently of the other pairs of alleles during
Premium DNA Genetics Gene
DOLP- Fungi General Structure and Function: For many years‚ fungi were classified into the plantae kingdom because the two kingdoms seemed to be alike; but now‚ we know that they are all too different. In fact‚ the fungi kingdom is more closely related to the animalia kingdom. Some of the only notable similarities between the fungi and plantae kingdoms are that they are both made of eukaryotic cells‚ both immobile‚ both contain cell walls (although made of different material)‚ and both evolved
Premium Fungus
* NCERT 1. Reproduction in Organisms INTRODUCTION Biology in essence is the story of life on earth. While individual organisms die without fail‚ species continue to live through millions of years unless threatened by natural or anthropogenic extinction. Reproduction becomes a vital process without which species cannot survive for long. Each individual leaves its progeny by asexual or sexual means. Sexual mode of reproduction enables creation of new variants‚ so that survival advantage is enhanced
Premium Reproduction Gamete Reproductive system
produce cones – male and female - male cones produce microsporangia (pollen sacs) that produce microspores (4) which mature into pollen grains (microgametophyte) with wings for wind dispersal - female megasporocytes within the ovule undergo meiosis early producing megaspores (4) of which three degenerate and one is functional – this one undergoes mitosis to produce the female gametophyte (megagametophyte) = egg which lies in the archegonium - Fertilization – pollen sticks to female scales
Premium Fruit Leaf Seed
antheridia swim to the archegonia and fertilization occurs‚ leading to the production of a diploid sporophyte. The sporophyte grows up from the archegonium. Its body comprises a long stalk topped by a capsule within which spore-producing cells undergo meiosis to form haploid spores. In ferns and their allies‚ including clubmosses and horsetails‚ the conspicuous plant observed in the field is the diploid sporophyte. The haploid spores develop in sori on the underside of the fronds and are dispersed
Free Fern Plant Gamete
investigator hope to learn from doing this investigation? -They hoped by identifying and defining the kinases‚ substrates‚ and phosphorylation sites involved in recombination and segregation that they could better understand the important factors of meiosis. 2. Define unfamiliar terms: a. What key terms need to be defined before the investigation can be understood and described? -Mcm2- protein coding gene - CDKs- multifunctional enzyme that can modify various substrates that are involved in
Premium Cell cycle Meiosis Adenosine triphosphate
openings and produce produce a fluid secretion clitoris – covered by a fold of skin ‚ the two labia minora meet at the clitoris .SPERMATOGENESIS : the process by which spermatozoa are produced from male primordial germ cells though mitosis and meiosis . it produces mature male gametes ‚ commonly called sperm but specifically known as spermatozoa . for humans ‚ entire process of spermatogenesis takes 74 days ‚ testes
Premium Reproductive system