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Dictionary » H » Heterozygous

Heterozygous

Definition

adjective

(1) Of, or pertaining to an individual (or a condition in a cell or an organism) containing two different alleles for a particular trait.

(2) Having dissimilar alleles that code for the same gene or trait.


Supplement

Example: a zygote having one dominant allele and one recessive allele, i.e. Aa, for a particular trait.


Word origin: G. héteros the other of two, other, different + zygous, which pertains to a zygote.

Related forms: heterozygosity (noun).
Related phrases: heterozygous recessive, heterozygous dominant.

Compare: homozygous.
See also: allele.


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genetic problems: HELP!!!!!!!!!!!!!! ASAP

... and 1/4 no freckles phenotype. In percentages, 75% freckles and 25% no freckles children. 2. If Ted has bb (recessive blue eyes) and Mary has Bb (heterozygous bown eyes), then the chances are a cross of Bb x bb, resulting in the usual 1/4 Bb, 1/4 bb, 1/4 Bb, and 1/4 bb, totalling to 1/2 Bb and ...

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by kolean
Tue Aug 04, 2009 3:52 am
 
Forum: Genetics
Topic: genetic problems: HELP!!!!!!!!!!!!!! ASAP
Replies: 2
Views: 160

genetic problems: HELP!!!!!!!!!!!!!! ASAP

... children, what is the chance for freckles? 2. Pigmented eyes (generally brown) are dominant to blue eyes. If Ted has blue eyes and Mary is heterozygous, what is the chance that their offspring will have brown eyes? 3. Widow’s peak is due to a dominant allele. If Ted is homozygous dominant ...

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by littlebittygirl
Mon Aug 03, 2009 1:27 am
 
Forum: Genetics
Topic: genetic problems: HELP!!!!!!!!!!!!!! ASAP
Replies: 2
Views: 160

Determinig linkage map and parental genotype

... = 13.5 cM. Now, we try to explain why there is a difference between male and female ( in number of offspring - ratio 1:2). The female has a heterozygous genotype, Bb for example, and it is a nonsex-linkage alleles. and the male has genotype, bb. When they form F1, the males, who receive ...

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by littlemonkey
Sat Jul 18, 2009 5:04 pm
 
Forum: Genetics
Topic: Determinig linkage map and parental genotype
Replies: 2
Views: 197

Genetics Problems... Friends i need ur help

... comb is produced by the genotype aaB--, rose comb by A--bb, and single comb by aabb. If you were given a rooster with a walnut comb, known to be heterozygous for both genes, and a rose-comb hen from a true-breeding strain, what cross or crosses, and how many generations, would it take to obtain ...

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by hemu0912
Wed Jul 15, 2009 4:06 am
 
Forum: Genetics
Topic: Genetics Problems... Friends i need ur help
Replies: 5
Views: 229

Determinig linkage map and parental genotype

Your females are heterozygous for 3 recessive alleles, so they will have the genotype: AaBbCc aabbcc is homozygous recessive AABBCC is homozygous dominant AaBBCc is a mix, heterozygous for Aa and Cc alleles, homozygous for B. When ...

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by Jesse2504
Sat Jul 04, 2009 9:03 am
 
Forum: Genetics
Topic: Determinig linkage map and parental genotype
Replies: 2
Views: 197
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