Unit 3 Genetics and Heredity Review

The passing of traits from parent to child is known as _______________.

• Heredity

• DNA

• Genotype

• Phenotype

Tags

NGSS.MS-LS3-2

This trait is represented by a lowercase letter and hidden whenever a dominant allele is present.

• Dominant

• Recessive

This trait is represented by a capital letter and always shows up in an organism when at least one allele is present.

• Dominant

• Recessive

What did Mendel's cross-pollination of pea plants prove?

• It takes four generations of offspring to identify the parents' factors.

• Each parent only passes on one-half of its hereditary factors to each offspring.

• Inherited factors combine in offspring to create entirely new characteristics.

• There is no such thing as a true-breeding plant; they all have hidden factors.

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

Why do siblings from the same parents look different?

• They receive more traits from one parent than their sibling.

• The traits of their parents mix together like paint.

• They inherit different alleles for genes from their parents.

• The parent with more dominant traits will pass on more alleles.

Tags

NGSS.MS-LS3-2

What determines the similarities in anatomical (physical) features among organisms?

• Location on Earth

• Their environment

• Ecological relationships

• Chromosomes and genes

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is the relationship among chromosomes, genes, and DNA?

• Genes are made up of tightly wound strands of DNA, Chromosomes are made up of one or more genes.

• Chromosomes are sections of DNA found on genes. Genes are long, tightly wound strands of DNA

• Genes are segments of DNA, chromosomes are tightly wound strands of DNA 

Tags

NGSS.HS-LS1-1

Which of the following is a homozygous (the same) recessive genotype?

• BB

• bb

• Bb

Which of the following is a heterozygous (different) genotype?

• CC

• cc

• Cc

Which of the following is a homozygous (the same) dominant genotype?

• TT

• tt

• Tt