Match the following terms and definitions. 1.breeding of individuals that have genes for two different characteristics codominance 2.a grid system used to predict possible combinations of genes due to random fertilization incomplete dominance 3.a condition in which both alleles are dominant multiple alleles 4.when more than two alternatives exist for a gene dihybrid cross 5.a condition in which neither pair of alleles is dominant or recessive, so the traits blend in the phenotype punnett square

1. Dihybrid cross-refers to the breeding of individuals, which possesses genes for two distinct features. It is termed as dihybrid as one is considering a cross in between two distinct traits.  

2. Punnett square refers to a grid system, which is used to determine the probable combinations of genes because of random fertilization. The Punnett square helps one to determine an outcome of breeding or a cross.  

3. Codominance refers to the condition in which both the alleles are dominant. It comprises the alleles that exhibit the tendency of dominating at a similar time, and when an organism is heterozygotic, both the alleles are articulated.  

4. Multiple alleles refer to a phenomenon in which more than two alternatives prevails for a gene.  

5. Incomplete dominance refers to a condition in which none of the pair of alleles is recessive or dominant, thus, the traits get mixed in the phenotype.  

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

an individual’s sex (i.e., whether they are a male or female) is determined by the sex chromosomes. most people have two sex chromosomes, one that is inherited from their mother and one that is inherited from their father. typically, females have two x chromosomes (xx) and males have one x chromosome and one y chromosome (xy). conditions caused by changes (“mutations”) in genes located on the x chromosome are considered x-linked.

x-linked recessive inheritance

most x-linked conditions are recessive. this means that in a person with two x chromosomes (most females), both copies of a gene (i.e., one on each x chromosome) must have a change or mutation whereas in a person with one x chromosome (most males), only one copy of a gene must have a mutation. a female with a mutation in one copy of a gene on the x chromosome is said to be a “carrier” for an x-linked condition. a male with a mutation in a gene on the x chromosome is typically affected with the condition. because females have two copies of the x chromosome and males have only one x chromosome, x-linked recessive diseases are more common among males than females. however, x-linked recessive diseases can occur in both males and females.

for x-linked recessive disorders, an unaffected carrier mother who has a mutation in a gene on the x chromosome can transmit either the x chromosome with this mutation or a “normal” x chromosome to her children. if the father is unaffected, none of her daughters will be affected and all of her daughters will be unaffected—since they will inherit at least one normal x chromosome from their father. however, each daughter will have a 50% chance of being an unaffected carrier like her mother and a 50% chance of both x chromosomes being normal.