IV. Heterosis. Records from a dairy farm is presented. Evaluate the effect of crossbreeding on the performance of the herd by computing the heterosis for each trait. Purebred Parents Mean Performance Heterosis Australian Friesian Sahiwal Traits Holstein Friesian Mean of F1 Age at First Calving (month) Total Milk Yield (liter / lactation). Fat Yield (kg) 45 35 30 3,100 2,900 3,500 120 120 130 Computation:
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- Livestock Breed Identification: - Student Notes 39. Maine-Anjou Origin: France n the early 19th century, Count de Falloux crossed the Mancelle (a dairy breed) with the the Maine-Anjou Canada imported the first Maine-Anjou in 1969 introduced to the United States through artificial insemination Characteristics: from England to result in very dark red with white markings; white may be on the head, body, can be horned or genetically polled noted for their milking ability, high cutablity, but are slower maturing due to their large size tail and rear legs niauomiJ.8E am 40. Maine-Anjou Size: largest breed of cattle in France cows weigh between 1,400 and 1,600 lbs.; bulls weigh between 2,000 and 2,500 lbs. Usage: dual purpose breed in France; is suggested to use them as a terminal sire breed, although some the dam due to their use them as characteristicsLivestock Breed Identification: Cattle Student Notes 42. Marchigiana Size: large breed with heavy fine bone structure and strong feet and legs cows weigh between 1,300 and 1.500: bulls weigh between 2,000 and 2,400 Usage: besides purebred use, the Marche is used as a terminal beef sire because the white hair color is a recessive trait and the calf is usually born the color of the dam popular cross is with the Angus breed high fertility, rapid growth rates,, adaptability makes this breed popular in the United States and climate 43. Murray Grey Origin: Australia in the early 1900s, a light roan Shorthorn cow was crossed to several Angus, but all the new breed semen was imported to the United States in 1969 Characteristics: silver to dark or and are homozygous polled noted for calving and handling ease were gray- starting a gray in color with dark pigment |Edio | Calendar X Edio | Student Da x days/1089977/lessons/1533969/variants/2439102/take/10/ A Q TEXT ANSWER The inheritance patterns for some traits in guinea pigs are listed in the table below. 1. Identify the phenotype of a guinea pig with the genotype HhBBrr. 2. Using the allele symbols in the table, identify the genotype of a guinea pig that is recessive for hair length, heterozygous for hair color, and homozygous dominant for hair texture. Trait Dominant Allele Recessive Allele hair short (H) long (h) length hair color black (B) white (b) rough (R) smooth (r) hair texture BIUG X₁ X¹ EEAA H Normal : √x Enter your answer here ŏooooo Questions Answered 中山川 Ω Ο Τ Edio | Calendar X RepostExchange X Practice All Changes Saved Continue
- elp Normal ▾ B IU A - Corn Breeding / Genetic Problem A corn breeder is working with 2 inbred corn plants. He is interested in two traits: High yield (produces lots of corn) and drought tolerance (does not need lots of water). High yield (H) is dominant to low yields (h). Drought tolerance (D) is dominant to drought intolerance (d). M BEE Inbred 1 is true breeding for drought tolerance and low yield (DDhh). Inbred 2 is true breeding for drought intolerance and high yield (ddHH). In the parent cross (P) the corn breeder crossed inbred 1 with inbred 2. The resulting F₁hybrid (DdHh) was heterozygous for drought tolerance and high yields. Phenotypically all the corn needs little water to grow and produces lots of corn. This is the corn that is sold to farmers, planted in the Spring and harvested in the Fall. Explain why the farmer does NOT hold back some of the Fall harvested (F₂) kernels and plant them next Spring. You must show your work. (Hint: As a %, how many of the F2 kernels still…Livestock Breed Identification: Cattle - Student Notes 44. Murray Grey Size: small-sized breed with moderate birth weights between 60 and 70 lbs. cows average between 1,100 and 1,500 lbs.; bulls average between 2,000 and 2,400 lbs. Usage: works well as a breed 45. Piedmontese Origin: Piedmonte region of northwestern Italy evolved from fusion of the ancient European Aurochs and the Zebu cattle from was first imported into Canada in 1980 and shortly thereafter brought into the United States Characteristics: fawn when they are born, gradually turning white as they develop black coloring around the eyes, a black nose, black feet and black tail-tip muscled animals with small bones and thin skin; the double muscling trait develops weeks after birthEdio | Course Student Lesson Using the letter T to represent t x + days/1089940/lessons/1533883/variants/2273231/take/14/ O Alert 1 of 1: Instructional Technology Subsidy Úp. DISMISS * Practice MULTIPLE CHOICE Using the letter T to represent the trait, what is the genotype for individual 7? TT TE it is impossible to determine from this picture Atempe t of 2 683838886 0888.o S of & Total Questions Answered A Changes Saund 21°F Sunny
- AAeres Shident Dashboard MA NCHLS: goformative.com/formatives/60065d5b16a20c0af8319cc9 Launch Meeting-Zoom O Advanced Biology Exam Mendel x t sd net bookmarks MAGC 4. 5. 6. 7. 8. 6. 10 11 12 19 20 21 22 23 24 25 OO0 00-O 3\ 13 14 15 16 17 18 3/16= 19% 1/16= 6% 0/16= 0% Which of Mendel's "rules," stating that genes for different characteristics are inherited separately, was proved by his dihybrid crosses? Rule of dominance Rule of unit factors Law of independent assortment Law of segregation A female Guinea pip is homoszygous dominant for Black fur (BB) and is mated with a homozygous recessive for white fur (bb) In a itter of 8 offspring there would be a probability of. Draw a punnet squareL LINCOLN STUDENT PORTAL - Lin x A Aeries Student Dashboard O Launch Meeting - Zoom Advanced Biology Exam Mendel x A goformative.com/formatives/60065d5b16a20c0af8319cc9 O students.lusd.net bookmarks O MAO 1. 4 7 8. 6. 10 14 15 16 17 18 19 20 21 22 23 24 25 11 12 13 -0-O0-0-0-0 4 Different forms of a gene is called genotype allele phenotype homologous chromosome If the Diploid number (2n) of chromosomes in Carrots is 18, the haploid number (n) is 36 18 27 9. 6. Having two DIFFERENT alleles for a trait, Hh OOOOA flock of sheep have 140% lambing. The goal is increased fleece weight with smaller fiberdiameter. There are 960 ewes mated at a ratio of 1:40. Rams are two years old when their firstoffspring are born. After the 1st breeding season, ¾ of the rams are kept and used in a secondseason with those sold replaced with new, younger rams. Ewes first lamb at 2 years of age andare retained for 6 lambings but 10% of ewes fall out each year because of non-pregnancy and/ordeath loss (equal loss from all age groups). Fleece weight heritability is 0.3 and phenotypic sd 1lb.A. Calculate the direct response to selection on fleece weight.B. Fleece weight measures the quantity of fiber produced by an animal; however fleeceweight is related to fiber diameter with a genetic correlation of .35. Fiber diameter hasa phenotypic sd of 1.5 micron and heritability 0.5.C. Calculate the response in fiber diameter from your selection on fleece weight.D. You contracted with a university to perform a genetic…
- TUDENT PORTAL - Lin x A Aeries Student Dashboard O Launch Meeting - Zoom O Advanced Biology Exam Mendel x goformative.com/formatives/60065d5b16a20c0af8319cc9 d.net bookmarks M A S C BOB ☆ 品 NEW 3 4. 5 6 8 10 11 12 9. 13 14 15 16 17 18 19 20 21 -C 22 23 24 25 Ooo O O-o o 12 Based off this Punnett Square, what fraction of the offspring will have the probability of green and wrinkly seeds? 1 mother (RrYy)O RY Ry rY ry RY RRYY RRYY RrYY RrYy Ry RRYY RRyy RrYy. Rryy rY RrYY RrYy rrYY rrYy ry RrYy Rryy rrYy rryy O 1/16 3/16 16/16 9/16 13 Homozygous recessive, bb (blonde) is crossed with homozygous dominant, BB (brown). What is the probibility father (RrYy)OO False 4 Mutant traits can be adaptive or nonadaptive. True FalseIndependent Practice: For each genotype below, indicate whether it is dominant, recessive, heterozygous, homozygous recessive, or homozygous dominant. E Ee Mm nn Homozygous recessive HH Pp K DD Nm a