Genetics Study Guide

Fill in the Blank. 1. _______________________ is used to describe an individual with two of the same allele Ex. HH or hh.

• Homozygous

• Heterozygous

• Dominant

• Recessive

Green plants are dominant to yellow plants. What would the phenotype be if a plant has the genotype Gg?

• Green

• Yellow

• Blue

• Red

A physical characteristic that an organism can pass on to its offspring through its genes is a _______________.

• trait

• habitat

• behavior

• ecosystem

Tags

NGSS.MS-LS3-2

Fill in the Blank. 4. An individual’s combination of alleles is known as its ________________________________.

• genotype

• phenotype

• chromosome

• trait

Tags

NGSS.HS-LS3-2

The trait that can be masked by another trait is known as ________________________.

• recessive

• dominant

• codominant

• inherited

A ____________________________ is a chart showing all possible combinations of alleles used to determine the probability of having offspring with a certain trait.

• Punnett square

• Bar graph

• Venn diagram

• Line plot

Fill in the Blank. 7. An organism's physical appearance, or visible traits is its _______________________________.

• phenotype

• genotype

• allele

• chromosome

A small segment of DNA that codes for a trait is a ____________________.

• gene

• chromosome

• enzyme

• nucleotide

Tags

NGSS.HS-LS3-1

Fill in the Blank. 9. Different forms of a gene represented by letters are ________________________.

• alleles

• chromosomes

• genotypes

• nucleotides

Write the genotype for a homozygous dominant black dog.

• BB

• Bb

• bb

• bB

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2