29. Heredity

Patterns of Inheritance

29. Heredity

Patterns of Inheritance

Dominant-recessive inheritance, incomplete dominance, and codominance

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MyReadinessTest Video: Allele Interactions

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MyReadinessTest Video: Allele Interactions

Dominant Alleles vs Recessive Alleles

How to Draw a Punnett Square

Incomplete Dominance and Codominance

Co-dominance and Incomplete Dominance

Mendel's Law of Dominance

Multiple Alleles and Codominance

AK LECTURES

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Practice this topic

Multiple Choice

An allele that is able to mask the expression of its partner allele is said to be __________.

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Multiple Choice

Codominant alleles are present in __________.

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Multiple Choice

An organism with five pairs of homologous chromosomes could produce __________ different gametes on the basis of independent assortment alone.

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Multiple Choice

The larger the number of offspring, the greater the likelihood that the observed ratios will conform to the values predicted by the Punnett square.

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Multiple Choice

Many genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits.

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Multiple Choice

The X and Y sex chromosomes are the best examples of homologous chromosomes.

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Multiple Choice

How many chromosomes are in a normal haploid human cell?

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Multiple Choice

In dominant-recessive inheritance, if an individual is heterozygous, which phenotype will be expressed?

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Multiple Choice

The form of inheritance in which the heterozygous state is expressed as an intermediate is __________.

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Multiple Choice

A person who inherits the A and the O blood type alleles will possess which blood type?

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Multiple Choice

What is the probability that a child will be born with a recessive trait if both parents are heterozygous for the trait?

In the human blood type AB, both alleles are expressed and are therefore __________.

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Multiple Choice

If the allele for brown hair is represented by B, it means that __________.

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Multiple Choice

Heterozygous parents who have had one child with a recessive disease have a __________% chance of having a second child born with the same recessive disease.

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Multiple Choice

Use the following information to solve the problem using a Punnett square: Assume that the dominant B allele encodes brown eyes and the recessive b allele encodes blue eyes. An individual with the genotype bb has children with an individual of the genotype Bb. What is the percent chance that they would have children with blue eyes?

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Multiple Choice

Which of the following disorders is NOT inherited as a simple recessive trait?

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Textbook Question

Which pattern of inheritance includes examples of codominance?

a. Autosomal dominant and recessive traits

b. Multiple-allele traits

c. Sex-linked traits

d. Polygenic inheritance

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Textbook Question

Determine the probability of a couple having a child with a widow's peak if the conditions are as follows: The gene for widow's peak follows strict autosomal dominant-recessive inheritance. Widow's peak (W) is dominant, and no widow's peak (w) is recessive. The genotype of the mother is Ww, and the genotype of the father is ww.

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Textbook Question

Elise is a freshman college student taking Introduction to Biology. In lab, she is asked her parents' blood types to complete a Punnett square. She knows that she has type A blood and that her mother has type B, but she does not know her father's blood type. Elise's lab partner assures her that she can figure out her father's blood type just by knowing her own and her mother's. Is her lab partner correct? Explain why or why not.

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Textbook Question

Certain diseases are transmitted via mitochondrial DNA. Which cell types do you think would be most affected by such diseases, and why?

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