a. The presence of a widow's peak is dominant over a straight hairline. In a cross between a homozygous dominant male and a homozygous recessive female, what is the male's genotype? Use the letter T and/or t in showing the correct genotype. b. What are the resulting genotype(s) of the offsprings in the cross from the previous question? If you are including multiple answers, separate them with commas. c. What is the resulting phenotype(s) of the offspring? If you are writing multiple answers, please separate them with commas.

What phenotypes in what ratio would be expected in the F2 generation of the cross with the following information: The genotype of homozygous black, long haired rabbit is BBhh The genotype of homozygous brown, short haired rabbit is bbHH The gamete of homozygous black, long haired rabbit is Bh The gamete of homozygous brown, short haired rabbit is bH F1 progeny is BbHh (heterozygous black, short haired rabbit)

In this case a family history revealed a genetic basis for the disorder. The pedigree is shown in Fig. 1 Below. Key Ø Female: affected Female: unaffected || IV V 5600 orize 077808 15 10 9 10 CHO વ Male: affected Male: unaffected Deceased Disease status not given Dizygotic twins Monozygotic twins Fig. 1 Disease pedigree. Five generations I, II, III, IV, V are shown. Females are represented by circles, males by squares, dizygotic (non-identical) twins by diagonal lines originating from the same point, Monozygotic (identical) twins by diagonal lines originating from the same point and joined symbols and deceased by a diagonal line through the symbol. Filled symbols indicate that the individual displays the disease phenotype. Unfilled symbols indicate that the individual does not display the disease phenotype. Carriers of the disease are not indicated. Information on disease status is not known for generation I and is omitted for the individuals represented by a symbol with an asterisk.…

The pedigree below shows a family with a history of an autosomal recessive genetic disease with one individual's genotype indicated (G denotes the normal allele and g denotes the disease-causing allele). * O 0 O 1/8 1/4 O 1/16 Individual 1's father is known to be heterozygous (*) and his mother is known to be homozygous dominant. Other individuals in the pedigree may be carriers, but are not marked. The question mark (?) indicates that you do not yet know anything about this individual's phenotype with regard to the disease. Part 1 What is the probability that individuals 1 and 2 will have a child (5) who is a male with the disease (the child is unborn and the sex is not yet known)? O 1/4 1 O 1/6 5 1/8 2 01/12 gg 3 Part 2 What is the probability that the daughter (female)(6) that individual 3 and 4 just had will have the disease? 6

In the following cross, imagine that you have a female fly that has two Xs and one Y due to a nondisjunction event in her mother's germ cells. Draw out what the possible gametes are for both the female and the male and also a Punnett square showing the genotypes, phenotypes, and sex of the possible flies as a result of this cross. You do not need to provide the probabilities of each of these. Red-eyed wi C Ở Red-eyed wt XX Y X Y Meiosis

Please consider the pedigree below. There are no cases of false paternity. AB 2 I II 2 3 A (AB A)B 1 III 2 3 4 IV B 1 2 a. Which individual/s definitely has/have Bombay phenotype in this extended family? b. What are the genotypes of individuals II-2 and II-3 at the ABO and H loci?

Frank and Susan both have freckles but they're firstborn son Lawrence does not demonstrate the characteristics. What are the most likely genotype of Frank Susan and Lawrence?