Description : If a dwarf pea plant was treated with gibberellic acid, it became as tall, as tall pea plants. If these pea plants are crossed with pure tall pea plants, what will be the phenotypic ratio in F1 generation? ... (b) 50% tall and 50% dwarf plants (c) 75% tall and 25% dwarf plants (d) 100% tall plants
Last Answer : Ans. ((d))
Description : In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, (a) 25% will be ... with red fruit (c) 75% will be tall with red fruit (d) all the offspring will be tall with red fruit
Last Answer : (b) 50% will be tall with red fruit
Description : A tall plant is crossed with a short plant. If the tall F1 pea plants are allowed to self-pollinate, a. the offspring will be of medium height. b. all of the offspring will be tall. c. all of the offspring will be short. d. some of the offspring will be tall, and some will be short.
Last Answer : d. some of the offspring will be tall, and some will be short.
Description : When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited a. an allele for tallness from each parent. b. an allele for tallness from the tall parent and an allele for shortness ... parent. c. an allele for shortness from each parent. d. an allele from only the tall parent.
Last Answer : b. an allele for tallness from the tall parent and an allele for shortness from the short parent.
Description : When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because a. the allele for tall plants is recessive. b. the allele for short plants is dominant. c. the allele for tall plants is dominant. d. they were true-breeding like their parents.
Last Answer : c. the allele for tall plants is dominant.
Description : Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino? (a) 50% (b) 75% (c) 100% (d) 25%
Last Answer : (d) 25%
Description : Due to the cross between TTRr × ttrr the resultant progenies show what percent of tall, red flowered plants? (a) 50% (b) 75% (c) 25% (d) 100%
Last Answer : (a) 50%
Description : 100% modulation in AM means a corresponding increase in total power by: A. 25% B. 75% C. 100% D. 50%
Last Answer : D. 50%
Description : Down’s syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder? (a) 100% (b) 75% (c) 50% (d) 25%
Last Answer : (c) 50%
Description : If a pea plant that is heterozygous for round, yellow peas (RrYy) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (RRYy), how many different phenotypes are their offspring expected to show? a. 2 b. 4 c. 8 d. 16
Last Answer : a. 2
Description : Both husband and wife have normal vision though their fathers were colour blind. The probability of their daughter becoming colour blind is (a) 0% (b) 25% (c) 50% (d) 75%.
Last Answer : (a) 0%
Description : In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation all pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect ... F2 is 1 4 2 4 1 4 ( ) red p : ( ink w ) : ( ) hite .
Last Answer : (a) Law of segregation does not apply in this experiment.
Description : If you made a Punnett square showing Gregor Mendel's cross between true-breeding tall plants and truebreeding short plants, the square would show that the offspring had a. the genotype of one of the ... . a genotype that was different from that of both parents. d. the genotype of both parents.
Last Answer : c. a genotype that was different from that of both parents.
Description : The principles of probability can be used to a. predict the traits of the offspring produced by genetic crosses. b. determine the actual outcomes of genetic crosses. c. predict the traits of the parents used in genetic crosses. d. decide which organisms are best to use in genetic crosses.
Last Answer : a. predict the traits of the offspring produced by genetic crosses.
Description : A non-reversible machine has efficiency a.less than 50% b.nearly 100% c.between 75% and 99% d.more than 50% e.107 dynes
Last Answer : a. less than 50%
Description : Accumulators should have adequate volume to store refrigerant charge at least (a) 10% (b) 25% (c) 50% (d) 75%
Last Answer : Ans: c
Description : A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind? (a) 25% (b) 0% (c) 50% (d) 75%
Description : tt mates with Tt. What will be characteristic of offspring? (a) 75% recessive (b) 50% recessive (c) 25% recessive (d) All dominant
Last Answer : b) 50% recessive
Description : Which of the following represents a racemic mixture? (a) 75% (R)-2-butanol, 25% (S)-2-butanol (b) 25% (R)-2-butanol, 75% (S)-2-butanol (c) 50% (R)-2-butanol, 50% (S)-2-butanol (d) none of the above
Last Answer : 50% (R)-2-butanol, 50% (S)-2-butanol
Description : Cooling efficiency of a cooling tower is significantly affected under cross-wind condition and might decrease to……… in the range of moderate to high wind velocity condition. a) 50% c) 25% b) 75% d) 90%
Last Answer : 75%
Description : For ductility consideration, the maximum percentage of steel used should not exceed ------- of the balanced steel [ A ] 25% [ B ] 50% [ C ] 60% [ D ] 75%
Last Answer : [ D ] 75%
Description : In shafts with keyways the allowable stresses are usually ------------ proportional to the twisting moment. a.25% b. 50% c. 75% d. 95%
Last Answer : c. 75%
Description : When two transformers are operating in parallel, they will share the load as under: (A) proportional to their impedances. (B) inversely proportional to their impedances. (C) 50% - 50% (D) 25%-75%
Last Answer : Ans: A High rating transformer has higher impedance. kVA rating α Impedance of transformer
Description : The density of lead is 12 grams per cm3. A lead brick has a mass of 1.5 kilograms. Its dimensions are 10 cm by 5 cm by 4 cm. Is it: w) More than 75% hollow x) Between 50 and 75% hollow y) Between 25 and 50% hollow z) Between 0 and 25% hollow
Last Answer : ANSWER: Y -- BETWEEN 25 AND 50% HOLLOW
Description : f we cross pure-bred tall (dominant) pea plant with pure-bred dwarf (recessive) pea plant we will get pea plants of F1 generation. If we now self-cross the pea plant of F2 generation, ... plants not found in F2 generation but appeared in F2 generation, mentioning the reason for the same. -Biology
Last Answer : Answer. (a) All plants of F1 generation will be tall plants. (b) 3:1 (c) Dwarf trait is recessive trait which was not expressed in the F1 generation, the recessive trait gets expressed in the F2 generation after self pollination.
Description : According to the idea of punctuated equilibrium, macroevolution usually involves A) slow and gradual change. B) alternating periods of stasis (no change) and rapid change. C) most species becoming extinct in a relatively short time. D) species selection.
Last Answer : B) alternating periods of stasis (no change) and rapid change.
Description : According to the idea of gradualism, macroevolution usually involves A) slow and gradual change. B) most species becoming extinct in a relatively short time. C) alternating periods of stasis (no change) and rapid change. D) species selection.
Last Answer : A) slow and gradual change.
Description : For 100% modulation, power in each sideband is ________ of that of carrier? a) 50% b) 70% c) 60% d) 25%
Last Answer : Ans: D
Description : A white woman marries a black man. They have four children — 2 sons and 2 daughters. What proportion of these chi 1dren is likely to be black (a) 25% (b) 50% (c) 100% (d) none
Last Answer : Ans:(d)
Description : Lactose has water solubility of a. 100% b. 50% c. 18% d. 25%
Last Answer : c. 18%
Description : .A normal-visioned man whose father was colour- blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind? (a) 100% (b) Zero percent (c) 25% (d) 50%
Last Answer : Zero percent
Description : If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child? (a) 25% (b) 100% (c) No chance (d) 50%
Last Answer : 25%
Description : A family of five daughter only is expecting sixth issue. The chance of its being a son is (a) zero (b) 25% (c) 50% (d) 100%.
Description : A normal-visioned man whose father was colour-blind, marries a woman whose father was also colour-blind. They have their first child as a daughter. What are the chances that this child would be colour-blind ? (1) 50% (2) 100% (3) Zero percent (4) 25%
Last Answer : (3) Zero percent
Description : 4. A haemophilic man marries a normal homozygous woman. What is the probability that their son will be haemophilic a) 100% b) 75 % c) 50% d) 0%
Last Answer : d) 0%
Description : When Mendel crossed a true-breeding short plant with a true-breeding tall plant, all the offspring were tall. Which term describes the gene for tallness?
Last Answer : Dominant.
Description : How many different allele combinations would be found in the gametes produced by a pea plant whose genotype was RrYY? a. 2 b. 4 c. 8 d. 16
Description : Difference between the P generation F1 generation and F2 generation. -Biology
Last Answer : answer:
Description : What happens to alleles between the p generation and the F2 generation?
Last Answer : In the P generation, one parent is homozygous dominant and theother parent is homozygous recessive. In the F1 generation, theproduct of a cross between the P generation, the offspring are allheterozygous ... expected result is 1/4 homozygous dominant,1/2 heterozygous, and 1/4 homozygous recessive.
Description : I'm looking for a fiction book, or books, which talks of alien invasion.
Last Answer : (The Invasion Of) The Body Snatchers
Description : Scientifically, hypothetically, or in plausible fiction, is there any possible fluke of the genetic code or something similar which could cause a person to stop aging?
Last Answer : Death? You will stop aging on the spot when death happens.
Description : How is it our looks can change over the years and go from looking like one parent to completely looking like another?
Last Answer : My sister was like that: looked like my mother's sister and never resembled my father until suddenly, at about age 30, she did. I think it's a genetic timeline that causes certain traits to kick in ... appear may have a hereditary component. But I'm just theorizing. This isn't my field of study.
Description : Wondering what it take between mom and dad to get blue eyed children?
Last Answer : Could be, but the chance wouldn’t be so high. Blue eye’s gene isn’t a dominant one and it would very likely be crushed by other more dominant genes, as seen from your sons. You can only hope that somehow there is no dominant gene that interfere with the blue gene your children are carrying.
Description : Oops! I sent my Cologard (for colon cancer testing) sample to Ancestry.com instead of my DNA sample. What results will I get about my genetic make-up?
Last Answer : They’ll find out what kind of an ass you really are. DNA is DNA – they should be able to extract it from your fecal matter.
Description : Why does Neymar have green eyes?
Last Answer : I have no idea who you are talking about, but genes are complicated. Skin tone does not determine eye color. The two are highly correlated, but correlation is not causation. So while some combinations ... that way or not, and racial mixing is the most common way to end up with unusual combinations.
Description : Question about DNA and genetic inheritance (details inside)
Last Answer : answer:That kind of testing has a certain level of speculation. The algorithm that comes up with those percentages is not perfect. It's like when you see a temperature reading carried out ... of this speculation on your reports. Then there is another alternative that could be rather uncomfortable .
Description : Have you had your DNA tested?
Last Answer : Yes. I had it done thru Ancestry.com. It was regularly $100 but I got a cyber Monday sale – $70 I think. I liked it and from what I know about my relatives, it was accurate.
Description : What do you know about Eugenics?
Last Answer : It has been some time but I remember hearing about, then reading about it over thirty years ago. Among other things, it was used as a reason for maintaining racial purity if I recall correctly.
Description : Are you for or against 'Designer Babies'?
Last Answer : It is inevitable. Also, that is what mate selection is all about. To get the best genes for your offspring. Genetic modification is just a more direct and controlled way of doing the same thing. In any case, it is still better than supporting torture and drone terrorism.
Description : Do traits influence the values that we create or appeal to us?
Last Answer : I disagree. I’m a type A personality asshole who always has to be right… But I live to help others.