7th Grade Genetics

Genetics

100

What is genetics?

The study of genes.

200

What is the shape of DNA?

Double Helix

300

What are the threadlike structures of DNA that carry genes called?

Chromosomes

400

What carries the information that determines your traits?

Genes

500

Who is the "founder of the science of genetics"?

Gregor Mendel

Heredity

100

What is the passing on of traits from parents to their offspring?

Heredity

200

Who first studied heredity and the passage of traits from one generation to the next?

Gregor Mendel

300

What type of organism did Gregor Mendel use to first study heredity?

Pea Plants

400

What is the the physical trait observed in an offspring? Aka- "the final product", what you see

Phenotype

500

What is a trait?

Characteristics about humans and other living organisms that can be described or measured

Reproduction

100

True or False: Sexual reproduction is faster than asexual reproduction.

False

200

Asexual reproduction has no _________________.

Genetic Variation

300

What is the joining of an egg and a sperm?

Fertilization

400

A type of asexual reproduction in which the new organism grows on the side of the parent

Budding

500

A form of asexual reproduction in which the one cell parent splits into two identical cells

Binary Fission

Punnet Squares

100

Some genes can be hidden or covered up by another. These are considered to be-

Recessive

200

What is the punnet square used for?

To determine the outcome of offspring.

300

A black chicken (BB) is crossed with a black chicken (BB). What percentage of offspring will be black?

100%

400

Having dimples is dominant (D). Not having dimples is recessive. (d) Both parents are heterozygous for the dominant trait. What percentage of the children will NOT have dimples?

25%

500

Long ears are dominant (E) in rabbits. If one parent is homozygous dominant for the long ear trait and the other homozygours reccessive (e), what is the only possible genotype of the offspring?

Ee

Misc

100

What is genetic information inside the body’s cells that makes us who we are?

DNA

200

What is the structure in a cell that contains the chromosomes?

Nucleus

300

What do the capital and lower case letter represent in a Punnett Square?

Capital = Dominant Trait Lower Case = Recessive Trait

400

How many parents are involved in asexual reproduction?

One

500

Two dark brown rabbits have four offspring. Three of the offspring are dark and one is white. What does this tell you about the parents' genes for fur color?

Dark brown is dominant and white fur is recessive. Both parents are heterozygous.