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If the gene for a trait has two alleles, one dominant (D) and one recessive (d) there are three possible combinations in the genotype:
DD (homozygous dominant)
Dd (heterozygous)
dd (homozygous recessive)
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∙ 14y ago
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Does sexual reproduction create new alleles or new combinations of alleles?
new combinations of alleles
Why do gametes have different combinations of alleles?
Crossing over and random alignment of chromosomes
What combinations of alleles could produce a trait controlled by a recessive alleles?
recessive + recessive or tt
What is the creation of new combinations of alleles called?
Recombination
What is the combination of alleles of an organism is?
Genetic Engineering phenotypedominantdominantgenetic engineeringgenotype
Does sexual reproduction create new alleles or new combinations of alleles?
new combinations of alleles
Which does sexual reproduction create new allels or new combinations of alleles?
new combinations of alleles
What are three different alleles used to represent blood type?
The three alleles are A, B, and O
From events during what phase do novel combinations of alleles arise?
Novel combinations of alleles arise in prophase I and metaphase I.
The new combinations of alleles produced by crossover events help to generate genetic?
The new combination of alleles produced by crossover events help to generate genetic diversity. This is because the offspring are different from the parents.
Why do gametes have different combinations of alleles?
Crossing over and random alignment of chromosomes
What three or more forms of a gene that code for a single trait called?
A gene can have multiple forms, which are called Alleles. While a single gene may code for a trait in an organism, when multiple alleles exist for that gene, each different may produce a different character of that trait. For example, a person has two copies of the gene that codes for ABO blood type. There are three different alleles for this gene, A, B and O. This results in six different combinations of the alleles that the person can have (the genotype), which in turn results in four expressions of the gene in the person (called the phenotype), which is the blood type of the person.
Why don't brothers and sisters look identical to each other?
Brothers and sisters are not identical because they have different combinations of alleles.
What combinations of alleles could produce a trait controlled by a recessive alleles?
recessive + recessive or tt
How many different combinations can be made with three items?
6 different combinations can be made with 3 items
What is the creation of new combinations of alleles called?
Recombination
What is the combination of alleles of an organism is?
Genetic Engineering phenotypedominantdominantgenetic engineeringgenotype
