Why lameness in dairy cows can affect their reproduction?
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Q: What percentage reduction in reproduction does lameness cause in dairy cows?
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- Mrs. Ethel Jones is an 86 year old women living in an assisted living home. She has been widowed for 4 years and has 2 grown sons ages 62 and 65, 4 grandchildren, and 2 great-grandchildren. She receives visits from family at least once a week. Before she retired she worked as an elementary school teacher. She reports that she enjoys reading, playing card games, working in the garden, and going on outings. She has a diagnosis of type 1 diabetes, hypertension, peripheral vascular disease, and asthma. About 6 years ago she got an infection in her right foot and required an amputation at the level of the ankle. She is still able to transfer independently with the use of a floor to ceiling poll; however she does spend most of her day in a wheel chair. Unfortunately in the past 3 months she has had 4 falls and is reporting that she is feeling weaker. Luckily she has not seriously hurt herself during these falls. She reports that she is very happy with the care that she receives and she…If a variety of seaweed reproduces only through mitosis, this would be considered is "asexual reproduction" true or false?The fruit fly Drosophila neotestacea carries a bacterial symbiont and can also be infected by a nematode worm. The figure shows the number of eggs produced by female fruit flies that are or are not infected by the nematode (two bars on the left vs two bars on the right) and that do or do not have the bacterial symbiont (red vs blue bars). 30 | Symbiont | No symbiont 25 15 10 5 Infected Not infected Assuming that the nematode benefits by being inside the fly, the fly- nematode relationship, when there is no bacterial symbiont, is best described as a(n). Select one: a. mutualism b. competition c. commensalism d. host-parasite relationship Number of eggs produced per ovary 20
- Compare the genetic relationship of the parent pest and its offspring. Use the word: GENETICALLY IDENTICAL/DIFFERENT, GENETIC RECOMBINATION. USE THIS SENTENCE STARTER: The parent pest and its offspring are (genetically identical/different) because...In fertilization, select answer a male gamete and a female gamete two female gametes two male gametes fuse to produce a select answer zygote female germ cell male germ cellTo conduct their experiment, the researchers collected L. peronii eggs from a natural stream. After the eggs had hatched, tadpoles were raised in artificially constructed 2 L containers in a laboratory. All containers were filled with 1 L of filtered tap water, and the water was changed every other day. Thirteen tadpoles were placed in each container, and the tadpoles were exposed to a 12-hour light: 12-hour dark photoperiod. All tadpoles were fed thawed spinach daily. The researchers randomly placed the tadpoles into containers exposed to one of four treatments, with nine replicates of each treatment, as follows: Low UVBR (<6.0 kJ/m2), low temperature (15OC) Low UVBR (<6.0 kJ/m2), high temperature (26OC) High UVBR (>70.0 kJ/m2), low temperature (15OC) High UVBR (>70.0 kJ/m2), high temperature (26OC) The researchers recorded the number of tadpoles still alive out of the original 13 in a container (percent survival) at different time periods. Their results at Week 4,…
- Why does it make sense for females to make only one egg cell every time meiosis occurs?___ ___ [two words] refers to the limit an environment places an organism's reproductive success.Let's go back to the image from the "Think About It." Use your new vocabulary, evidence from the lessons, and scientific reasoning to support the claim, "While there are many types of asexual reproduction, all types result in offspring identical to each other and the original parent." You may include a model or sketch as support for the claim. Submit your optional hand-drawn or digital model or sketch in the file upload question. B I iii !!! (a) (b) (C) (d) (e)
- * b. Briefly explain how the use of this molecule (CA1P) disrupts both stages of photosynthesis while the Rubisco enzyme is associated with only one stage. Codule 3: The principles of heredity 1. Let's take the example of the gray kangaroo (Macropus fuliginosus) whose ploidy is 8 and the sexual determinism of this species is carried out according to the XY mode. From a male kangaroo: a) Draw the karyotype of this individual, obtained by stopping division at metaphase. Your drawing should include: a. All maternal and paternal chromosomes involved (different colors) b. An example of autosome and heterochromosome c. An example of homologous chromosome, sister chromatid and centromere. d. The total number of chromosomes in a metaphase kangaroo cell. e. A sentence to explain the difference between the terms gene and allele that might apply to this species. Page 3/4 Sh Q + 9 CA 9 0 11:57 M DELLGametes are always haploid. Comment.Most eukaryotic organisms use sexual reproduction as their primary means of perpetuating their species. Gametes are formed via meiosis. However, some species primarily reproduce via asexual means. Reproduction is accomplished via mitosis. Aspen trees most commonly reproduce by such asexual methods of cloning.What are the advantages and disadvantages of reproduction by asexual means? Why do some species reproduce in this manner? Why don't all species?