In sheep, brown eyes (B) are dominant to blue eyes (b). What would be the genotypes of the following individual sheep? a) A brown-eyed sheep whose mother had blue eyes b) A lamb that is born from two blue-eyed parents c) A brown-eyed sheep who produces some blue-eyed lambs. d) A very old sheep that has only produced brown-eyed lambs.

23. What is the probability that the progeny of a cross between two individuals that are AABBCCDD will have the same genotype as the parents? A) 1/256 B) 1/16 C) 1/4 D) 1 24. Which of the following inheritance patterns describes the ability of a single allele to have multiple phenotypic effects? A) incomplete dominance B) multiple alleles C) pleiotropy D) epistasis 25. Phenylketonuria (PKU) is an inherited disease caused by a recessive autosomal allele. If two individuals are both carriers, what is the probability that their first child will be a carrier for PKU? A) 1/4 В) 1/2 С) 3/16 D) 3/8

A white-flowered plant is crossed with a red-flowered plant and all of the offspring are pink. This is an example of: A) sex-linked inheritance B) the principle of segregation C) incomplete dominance D) linked genes E) codominance

all of the offspring of a cross between a black eyed mendelien and an orange-eyed mendelien have black eyes. This means that the allele for black eyes is ___ the allele for orange eyes. A)Codominant toB)more aggressive thanC)recessive toD)dominant toE)better than

A trait with a high concordance value in MZ twins has a   a) significant environmental component. b) significant random component. c) significant inherited component. d) no conclusions can be drawn in this case.

3)The inability to synthesise chlorophyll is a recessive characteristic in tobacco plants. If a tobacco plant know to be heterozygous is self pollinated, and 600 of its seed were germinated, a) how many would you expect to produce albino (completely unpigmented) plants? b) how many would be expected to have the parental genotype? c) why is this cross the only way to produce albino tobacco plants

Dominant alleles are so called because under most circumstances they____ a) code for genes that are never considered lethal c) they are expressed whenever present d)code for desired traits only e) they are found on all 22 somatic chromosomes and not on sex chromosomes

2). In rabbits, coat colour patterns are determined by 3 alleles at one locus. Agouti is dominant over Himalayan and both are dominant over albino. Give all the possible genotypes of a) agouti rabbits b) himalyan rabbits c) albino rabbits

A farmer wants to breed a variety of taller corn.a) How can the farmer use variation in the height of thecurrent corn plants to produce taller corn plants?b) Will the farmer's work be most effective if height incorn plants is determined by polygenic inheritance,multiple alleles, or co-dominant alleles? Explain.c) The farmer finds that many of the tallest corn plantsare also very susceptible to a particular disease. Howcould the farmer design an experiment to find outif the genes for height are linked to the genes forresistance to the disease?d) If these genes are linked, what steps could the farmertake to create a breed of corn that is taller and moredisease-resistant than the current corn crop?

Curly hair is due to a dominant allele in humans. Straight hair is a recessice allele. the heterozygous condition produces wavy hair, a. phenotype that appears as a blend of the two alleles. This is an example of which of the following patterns of inheritance.   a) Simple dominant b) Sex linkage C) Multiple allele d)Incomplete dominance