23 from each parent
2
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.
Each parent must have the recessive allele for colorblindness.
Segregation
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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.
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.
50% from each parent: one allele in each gene, each parent, for a total of two.
did
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.
Each parent must have the recessive allele for colorblindness.
homozygous recessive
Segregation
Segregation
For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent. An individual with one dominant and one recessive allele for a gene will have the dominant phenotype.
one allele from each parentThe F1 generation inherited one dominant (tall) allele from the tall parent and a recessive (short) allele from the short parent. The F1 generation were heterozygous and tall.
Recessive?? (i.e., you would need to inherit one from each parent to have hemophilia)
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