Genetics Answers

a man with type A- blood and a women with type B+ blood marry and have 8 children. one of the children has type O- blood. what are the genotypes of the parents. what are probable genotypes and phenotypes of the 8 children.

I have a biology assignment involving questions about a pregnant female patient, 45, who has had an amniocentesis performed, and a fetal karyotype is given to help discern chromosomal abnormalities in the fetus. It is clear that the fetus has an extra chromosome 21, indicating Down's Syndrome...but the X and Y chromosomes also look as though they're practically "reversed", in the sense that the X is way too short and the Y is way too long. Is this typical of individuals with down's syndrome or does this also indicate some other abnormalities, perhaps with the sex organs or something else? So why has this happened to the X and Y chromosomes and what does (or could) it indicate?

Task 6. Fill in the table : "Classification of carcinogenic factors (external actors)^ n : 1 Mechanical carcinogens 2 . Physical carcinogens 3 Chemical carcinogens 4 . Biological carcinogens

an alien race called the zeebs has three skin tones: purple, yellow, and purple with yellow spots.

what type of inheritance is this?

show the result of a cross ( punnet square) between a purple and a yellow zeeb

When a black guinea pig was crossed with a white guinea pig , their litter container all black offsprings .which allele is dominant ? Use the pun net square to demonstrate how you are certain

 If stripes are dominant and solid is recessive, what are the alleles for this trait?

A black guniea pig is crossed albino pig produced 12 offspring with 7 black and 5 albino. what is the best explanation for the situation in punnet square?

In the family, where the wife had the II blood group and her husband had the III blood group, there was born the son with color blindness and the I blood group. Both parents differed colures in norm. Determine the probability of the birth of healthy son and his possible variants of blood groups. It is known that color blindness is X-linked recessive disorder.

What THE PROCEDURES IN RECOMBINANT DNA TECHNOLOGY

and LIST THE APPLICATIONS AND DISADVANTAGES OF THIS TECHNOLOGY

n humans, colour blindness is due to an “X” linked recessive trait we shall represent with the symbols Xn. Females that carry a hidden recessive gene for colour blindness in the heterozygous condition are called “CARRIERS”

Show two different crosses that would result in possible colorblind daughters.