Biology STAAR Learning Luau - RC 2

Front

What are the components found in the cells of all living organisms?

Back

Cytosine and guanine are components found in the cells of all living organisms.

Front

What is the complementary DNA strand for 3’ AGGTCAGGT 5’?

Back

The correct complementary DNA strand is 5’ TCCAGTCCA 3’.

Front

What is the probability of albinism in the offspring of a cross between two mice with AaBb alleles?

Back

The probability of albinism is 4/16.

Front

What are the most likely genotypes of individuals I-1 and I-2 in an autosomal dominant trait pedigree?

Back

I-1: Aa, I-2: aa.

Front

Why do people with cancer due to asbestos exposure not pass the mutation on to their offspring?

Back

The mutation occurred in somatic cells.

Front

Define 'allele'.

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is the function of the p53 gene?

Back

The p53 gene controls tumor suppression.

Front

What does 'autosomal dominant' mean?

Back

An autosomal dominant trait is one that is expressed if at least one dominant allele is present.

Front

Explain the term 'pedigree' in genetics.

Back

A pedigree is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism from one generation to the next.

Front

What is the significance of cytosine and guanine in DNA?

Back

Cytosine and guanine are nitrogenous bases that pair together in the DNA structure.