Unit 5 Test Review | Baamboozle - Baamboozle | The Most Fun Classroom Games!

English 40 Public

meiosis, mutations, heredity

Study Slideshow

What is a gamete?

A sex cell produced from meiosis (sperm or egg)

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What is a trait?

A characteristic of an organism that is specified by an organism's genotype and expressed by an organism's phenotype.

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What is a genotype?

The combination of letter alleles donated from each parent that determine's an organisms phenotype for a particular trait.

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What is a phenotype?

The physical appearance of an organism due to the genotype inherited by an organism.

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dominant allele

allele that is stronger than another so that the trait of an organism will show the dominant phenotype when at least one dominant allele is present

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recessive allele

weaker allele that will only result in a recessive phenotype when two of these alleles are present in a genotype

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homozygous

genotype with two of the same type of allele

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heterozygous

genotype with two different types of alleles

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probability

the likelihood that a certain event will occur

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Draw a punnett square for two heterozygous parents with purple phenotypes (dominant to white). Summarize the genotype and phenotype for both the parents and offspring.

Parent 1: Bb (purple), Parent 2: Bb (purple), 1/4 offspring: BB (purple), 2/4 offspring: Bb (purple), 1/4 offspring: bb (white)

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How can you tell if a situation is demonstrating a complete dominance pattern for inheritance?

The heterozygote will have the parent phenotype with the stronger allele.

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How can you tell if a situation is demonstrating a codominant pattern for inheritance?

The heterozygote will have both parent phenotypes present.

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How are gametes formed?

Meiosis

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What is genetic recombination? Give an example of a process that contributes to this.

Genetic recombination is the mixing of genetic information that can be passed from parent to offspring- Ex: Crossing over, independent assortment, segregation

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How many chromosomes do human gametes have?

23

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When does crossing over occur and what form of DNA is involved?

Meiosis 1- genes from homologous chromosomes are switched.

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