Micro Biology (705)
Bio Technology (277)
Bio Chemistry (736)
Bio Informatics (199)
Genetics (207)
Botany (781)
Zoology (409)
Cell Biology (461)
Bio Physics (83)
Ecology (296)
Embryology (130)
Biological Sciences AllOther (236) A normally pigmented man (dominant) marries an albino woman (recessive). They have 3 children, one of whom is an albino. What is the genotype of the man?
3 29220In sesame, the one-pod condition (P) is dominant to the three-pod condition (p), and normal leaf (L) is dominant over wrinkled leaf (l). The two characters are inherited independently. Determine the genotypes and phenotypes of the two plants which produce the following progeny: 318 one- pod normal, 98 one-pod wrinkled, 323 three-pod normal and 104 three-pod wrinkled.
5662Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?
3168In horses coat color is dependent upon genes as follows: A_B_ results in bay, aaB_ in black, A_bb in chestnut, aabb in liver. In addition, palimino is derived by Dd with chestnut. A palimono stallion (DdAAbb) is crossed with a palimino mare (DdAAbb). What percent of the offspring will be palimino?
2071The dominant gene (G) produces green hair in mermaids and the recessive gene (g) produces blue hair. Webbed fingers are due to the dominant gene (F) and normal fingers are recessive (f). A mermaid who was heterozygous for hair color and who had normal fingers had a father with blue hair and webbed fingers and a mother with green hair and webbed fingers. What are the genotypes of all individuals (as completely as possible)?
1 4425In cucumbers normal leaves (N) are dominant to curled leaves (n) and elongated fruit (L) is dominant to spherical fruit and these genes are linked on the same chromosome. If a pure-breeding normal-leaved, elongated fruit cucumber is crossed with a curled-leaved, spherical fruit cucumber, what will be the phenotype of the F1? the phenotypic ratio of the F2?
1 3753A certain man has the genotype AaBb; genes A and B are on one chromosome and a and b are on its homologue. List the gametes that could be formed with crossing over and with no crossing over
2 6995A normal woman whose father was a hemophiliac marries a normal man. What are the chances of hemophilia occurring in their children?
2 14368In cats yellow is due to gene B and black to its allele b. These genes are located on the X chromosome (sex-linked). The heterozygous results in calico (tortoise shell). What kinds of offspring (sex & color) are expected from the cross: black male & calico female? Most calico males are sterile, why?
3135The ABO blood system has been employed to settle cases of disputed paternity. Suppose, as an expert in genetics, you are called to testify in a case where the mother is type A, the child is type O and the alleged father is type B. How would you respond to the following statements of the attornies: a. "Since the mother has type A, the type O of the child must have come from the father and since my client is type B, he obviously could not have fatered the child." Made by the attorney of the alleged father. b. "Further tests revealed that this man is heterozygous and therefore he must be the father." Made by the mother's attorney.
2471The rare trait of ocular albinism (almost complete absence of eye pigment) is inherited as a sex-linked recessive. A man with ocular albinism marries a woman who neither has this trait nor is a carrier. What would you predict about their offspring concerning this trait?
1 4580
Explain the screening of biosurfactant producing bacteria ?
Of what units are, nucleic acids constituted. What are the chemical entities that compose that unit?
What has caused evolution?
What are the main respective constituents of cell walls in bacteria, protists, fungi and plants?
Explain coeloms. From which germ layer does it originate?
In mice colored coat is dominant to albinism. Sniffles, a male mouse with a colored coat is mated to Esmeralda, an alluring albino. The resulting litter of six young all had colored fur. The next time around Esmeralda was mated with Whiskers, who was the same color as Sniffles; some of this litter were white. a)What are the probable genotypes of Sniffles, Esmeralda, and Whiskers? b) If a male of the 1st litterwas mated to a colored female of the 2nd litter, what phenotypic ratio might be expected among the offspring? c)What would be the expected results if a male of the 1st litter was mated to an albino from the 2nd?
What are the different types of bio technology?
What can you calculate by selecting Born-Haber cycle?
What is a burette and how is it used?
What are hydrides of boron called?
What is the formula of the DPD for withered (shrank) plant cells? How is that situation possible?
what are non-viral vectors?
What are the favorable conditions for formation of Anions?
what are arboreal animals?
What is the name for magnesium per chlorate and what is its formula?