an allele refers to alternative form of a gen.each parent has his or her form of a gene.during mitosis,during anaphase,as the chromosomes separate,each cell end up with one chromatid and thus one kind of allele.therefore,each parent do donate one allele.
23 from each parent
Segregation
Each parent must have the recessive allele for colorblindness.
monkey balls
Every sex cell has one allele for each trait. after meiosis, pairs of chromosomes separate and alleles for each trait also separate into different sex cells.
23 from each parent
50% from each parent: one allele in each gene, each parent, for a total of two.
Segregation
did
Each parent must have the recessive allele for colorblindness.
homozygous recessive
Segregation
Only half of each parent's alleles are passed to their children. This means that parent 1 who is Aa at one gene locus will only pass A or a on to each offspring. Parent 2 may be AA, aa or Aa and will also only pass one allele on to each offspring.
Yes. Both parents have an A allele and a B allele. Each parent can only pass on one of his/her two alleles. If each parent passes an A allele to the child, then the child will have group A blood. If at least one parent passes on an Rh positive allele to the child, then the child would also be type Rh positive. So these two parents could have an A positive child.
Recessive?? (i.e., you would need to inherit one from each parent to have hemophilia)
monkey balls
Every sex cell has one allele for each trait. after meiosis, pairs of chromosomes separate and alleles for each trait also separate into different sex cells.