30 will give brainliest if all questions are answered

1.identify the phenotypes for the offspring of a parent with the genotype iai and a parent with the genotype iaib.

a. type o
b. type a and type b
c. type a and type ab
d type a, type ab, and type b

2.which of the following can determine if a trait is an x-linked trait?

a. a punnett square
b. a pedigree
c. a testcross
d a phenotype

3.why are males more likely than females to have an x-linked disorder?

a. males have two x chromosomes, so there is a greater chance of inheriting a recessive allele.
b. males are unable to inherit the dominant allele for sex-linked traits.
c. males have only one x chromosome, so a recessive allele is always expressed.
d. males always express the recessive allele, even when a dominant allele is present.

4.some people may be born with a trait for producing "wet" earwax. people who have this trait have inherited either one or two of the same allele. this means that the trait is

a. phenotypic
b. recessive
c. segregated
d. dominant

5.when a chicken that is true-breeding for black feathers is crossed with a chicken that is true-breeding for white feathers, the resulting offspring have grey feathers. this is an example of

a. simple dominance
b. codominance
c complete dominance
d. incomplete dominance

1. D

2. B

3. C

4. D

5. D

Explanation:

1. As shown in the punnet square below, the offprings can have the following genotypes; AA, AO. AB, and BO. The phenotypes of the offsprings  will therefore have blood types; A , AB and B.

2. A pedigree is a tree that shows the family history of an individual. In the lineage, one can discover that a particular disorder is transmitted by a certain gender, which is most often the males. This is how sex-linked disorders are indentified.

3. The Y chromosoms have very few genes and does not match the X chromosome allele for allele. Therefore a recessive gene on the X chromosome in males is likely to be expressed than in females because females have an extra X crhomosome.

4. The dominant allele is always expressed over the recessive one even when both are present (heterozygous) in an individual. Only when both aleles are recesive will the recessive trait be expressed.

5. Incomplete dominance means none of the alleles have complete dominance over the other. This means that both are expressed and the expressed traits is an intermediate of the individual traits of  the alleles.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

a symbiotic relationship with the mitochondria