504 Answered Questions for the topic genetics

Genetics

01/14/16

3. An unknown disease results from a point mutation that causes a nitrogen base to be switched in position three and five of the following DNA sequence (TTACCGG
3. An unknown disease results from a point mutation that causes a nitrogen base to be switched in position three and five of the following DNA sequence (TTACCGGA). The resulting inheritable... more
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Genetics

12/06/15

genetics........
Assume that brown eyes (B) is dominant to blue eyes (b) and rounded chin (R) is dominant to pointy chin (r). George has brown eyes and a pointy chin. Mary has blue eyes and a rounded chin. George’s... more
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12/05/15

Help! Please! Biology final question and I can't find anywhere in the book or online.
is it a set list of steps? Is it a formula? I cannot find it anywhere and its on my biology final. What steps are followed to sequence the gene for sickle cell anemia?  Thank you in advance!!
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Genetics

12/02/15

gentics punntte question
Colour-blindness is inherited as a sex-linked recessive trait. Eye colour is an autosomal(non-sex linked) trait in which brown eye colour is dominant to blue. A heterozygous brown eyed,... more
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Genetics

12/02/15

gentics punntte question
In tomatoes, round fruit (R) is dominant to long fruit (r), and smooth skin (S) is dominant to fuzzy (s). A homozygous dominant plant is crossed with a homozygous recessive plant. If two of the... more
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Genetics

12/02/15

gentics punntte question
The colour of feathers in birds is often determined by genes that exhibit incomplete dominance. For example, the gene for black fathers (B) may be incompletely dominant to the gene for white... more
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11/28/15

How do I replicate this teams of DNA? ATTCGGCAAG?
Super confused 
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11/22/15

Can a guy get either x from their mother
Can a guy get either x from their mother xx or both x combined into one x then passed to their son
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Genetics

10/12/15

draw a dihybrid cell undergoing meiosos
a. Briefly explain Mendel’s law and principles. b. Make a drawing of a dihybrid cell of genotype A/a B/b undergoing Meiosis. Make sure you label the chromosomes correctly and indicate at each major... more
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Genetics Science Biology

07/22/15

Genetics help
In the case of dalmation dogs, the non-spotted condition is recessive to the dominant spotted condition. Call the 2 alleles S for spotted and s for non-spotted. Both parents are heterozygous.   A)... more
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Genetics

04/05/15

Can suppressor mutations be reverse or intergenic? Or just intragenic?
I am reading my biology book and am having trouble understanding this concept at the end of the chapter.
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Genetics

03/26/15

Punnett square to show geno and pheno types of offsprings
for humans brown eyes are dominant (B) over blue eyes(b) what are the possible genotypes and phenotypes of their offspring showing Punnett square
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Genetics

03/16/15

how many DNA molecules exist in the human somatic cell during the synthesis stage of mitosis?
how many DNA molecules exist in the human somatic cell during the synthesis stage of mitosis?
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Genetics Mutation

02/15/15

mutation/selection balance, mutation rate calculation
If the incidence at birth before selection of a recessive mutation is given (ex. 1 in 90,000), how do you calculate the mutation rate if mutation and selection are balanced in maintaining the... more
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Genetics

01/14/15

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?
Can somebody help me please ?
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Genetics Calculus

12/02/14

Genetics and Calculus Help!
1. a. If you have a population of 80 individuals where the frequency of AA is 2/5, Aa is 2/5, and aa is 1/5, find pe and qe the frequency of each allele in the egg generation.b. Find the frequency... more
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Genetics

12/01/14

phenotype ratio
Two dogs with black, short haired coats have been crossed several times and produced many litters of puppies. Altogether, they have produced puppies of the following phenotypes:18 with black, short... more
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Genetics Science

11/06/14

After 30 cycles, calculate how much PCR product (in micrograms) could potentially be produced
 1 microgram of human genomic DNA is amplified in a PCR reaction using primers designed to amplify a 330 base pair fragment. After 30 cycles, calculate how much PCR product (in micrograms) could... more
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Genetics

08/06/14

What is the fraction of the offspring?
What is the fraction of the offspring with parents AaBBCCddEE and AaBBccDdEE will have a genotype aaBBCcddEE? I am trying to figure this out WITHOUT using the punnet square.... so what I know is:... more
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Genetics

05/20/14

chi square
In a Chi-square question you are usually given observed and you need to fill in the rest: expected, expected^2, etc. (Or you need to find the observed. But in this example observed is given) To get... more
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Genetics Biology Aminoacids

03/24/14

Deletion, insertion or substitution of nucleotides...?
Shown below are the amino acid sequences of the wild-­-type and 4 mutant forms of a polypeptide (the amino acid sequence is taken from the middle of the protein, so there is no start or stop codon... more
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Genetics

09/30/13

noncoding DNA,
Hello, in noncoding DNA, there is repetitive DNA: heterchromatin and transposon repeats (retrotransponsons and DNA transponsons). where do both of these repetitive sequences come from? are we born... more
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Genetics Biology

01/16/13

Why does our sense of taste differ from person to person?
how is this possible?
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Genetics Biology

01/09/13

How do you do a Dihybrid cross?
What are ways you can do this?
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01/09/13

What animals are self aware?
How can you figure out if one is self aware? Are any domestic pets self aware?
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