Cystic fibrosis (CF) occurs with a frequency of about
1/2500 Caucasian newborns and is inherited as an autosomal
recessive. A woman had an older sister die from
complications of this disease. CF is not present among
relatives of her husband. Both the woman and her husband
have normal phenotypes. What is the chance this couple will
have a CF child?
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A number of plant species have a recessive allele for albinism; homozygous albino (white) individuals are unable to synthesize chlorophyll. If a tobacco plant heterozygous for albinism is allowed to self-pollinate and 500 seeds germinate: a)how many offspring will be the same genotype as the parent? b)how many seedlings would you expect to be white?
Does postraumatic stress mutate genes?
what are the 3 different types of point or gene mutations?
The weight of the fruit of one variety of squashes is determined by three pairs of genes: AABBCC produces 6 lb squashes and aabbcc produces 3 lb squashes. Each dominant allele adds 1/2 lb tothe base weight (3 lb). If a pure breeding line that produced 6 lb squashes was crossed with a pure breeding line that produced 3 lb squashes, what would be the phenotypic ratio of the F1 and the F2?
what is Genetic Engineering?
Flower 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?
sir/ma'm im doing my msc in biotechnology.im concern that can go for phd in genetics? and how?? plz help me in this..thank you
what is junk DNA?
How is an allele different from a gene?
what are Stem Cells ?
What is gene expression
Suppose a father of blood type B and a mother of blood type O have a child of type O. What are the chances that their next child will be blood type O? Type B? Type A? Type AB?