DNA Structure & Meiosis
Genetics Vocabulary
Punnett Squares
Dihybrid Crosses and Fun with Math
Non-Mendelian Inheritance
100

This is what is made during meiosis.

What is sperm and egg (gametes)?

100

This term refers to the physical appearance of a trait.

What is phenotype?

100

Two parents who are both heterozygous (Aa) are crossed. These are the chances the child will be homozygous dominant.

What is 25% or 1/4?

100

This is the probability of two independent events both occurring (event 1 AND event 2).

What is the probability of event 1 times the probability of event 2?

100

This is the term for when heterozygous individuals have a blended or intermediate phenotype.

What is incomplete dominant?

200

These are the three parts of a nucleotide.

What are phosphate, sugar, and nitrogenous base?

200

This is an example of a homozygous recessive genotype.

What is "aa?" (any two lowercase letters is correct)

200

In pea plants, tall stems (T) is dominant to short stems (t). A heterozygous plant is crossed with a short plant. This is the expected ratio of tall to short plants in the offspring.

What is 1:1?

200

Two individuals that are heterozygous for two genes (AaBb) are crossed. This is the probability the offspring will be homozygous dominant for BOTH traits.

What is 1/16?

200

These are the two possible genotypes that produce Type B blood.

What are IBIB and IBi? (Bs should be superscripts)

300

This is when homologous chromosomes get together and exchange pieces of DNA during meiosis.

What is crossing over?

300

This is the number of dominant alleles that must be present in the genotype in order for the organism to have the dominant phenotype.

What is one?

300

In goldfish, bright coloring is dominant (C) and dark coloring is recessive (c). A bright goldfish is crossed with a dark goldfish. All 10 of the offspring are bright. These are most likely the parents' genotypes.

What are CC and cc?

300

Two individuals that are heterozygous for two genes (AaBb) are crossed. This is the probability the offspring will have the genotype Aabb.

What is 1/8?

300

This term describes when a second gene determines whether or not a gene is expressed.

What is epistasis?

400

This is the term for the failure of homologous chromosomes or sister chromatids to separate correctly during meiosis.

What is nondisjunction?

400

This is the definition of an "allele."

What is a "version of a gene?"

400

In pea plants, yellow color is dominant (Y) and green seed color is recessive (y). A cross between a yellow pea plant and green pea plants makes 68 yellow offspring and 71 green offspring. These are most likely the parents' genotytpes.

What are Yy and yy?

400

In pea plants, terminal flowers (F) are dominant to axial flowers (f), and smooth pods (P) are dominant to wrinkled pods (p). A pea plant with axial flowers and wrinkled pods is crossed with a pea plant that is heterozygous for both traits. This is the probability the offspring will have axial flowers AND smooth pods.

What is 1/4 or 25%?

400

This is how you can tell a trait is x-linked when looking at a pedigree.

What is it is more common in males?

500

These are the two reasons why sexual reproduction is better than asexual reproduction. 

What is genetic diversity, protection against pathogens, ability to evolve, etc?

500

This is the definition of a "gene" 

What is a segment/sequence of DNA needed to code for one protein?

500

In pea plants, purple flowers(P) are dominant and white flowers are recessive (p). A cross between two purple flowers produces 77 purple flowers and 23 white flowers. These are most likely the parents' genotypes.

What are Pp and Pp?

500

In pea plants, terminal flowers (F) are dominant to axial flowers (f), and smooth pods (P) are dominant to wrinkled pods (p). A pea plant with axial flowers and wrinkled pods is crossed with a pea plant that is heterozygous for both traits. This is the probability the offspring will have axial flowers AND smooth pods, or terminal flowers AND wrinkled pods.

What is 1/2 or 50%?

500

Skin color is an example of this type of inheritance.

What is polygenic inheritance?

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