BIO-111 Unit 3 Test (NOT FINISHED)

Meiosis usually produces ____ daughter cells

four haploid

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism?

16

A gene “Y” is dominant over gene “y”. An organism “Yy” is crossed with an organism “Yy”. The expected genotypic ratio would be ____

1 YY, 2Yy, and 1yy

Separation of the sister chromatids is a characteristic of which stage of mitosis?

anaphase

If brown is dominant over red, a homozygous brown plant will have the genotype of

BB

Rosalind Franklin's X-ray crystallography data suggested DNA is double stranded and has a uniform diameter. These observations can be used to rule out base pairing between two of the same nucleotide

an A-A pair is wider than a C-C pair

Identical copies of chromatin held together by cohesin at the centromere are called

sister chromatids

Which of the following combinations of base pairs will be found in a molecule of RNA?

A=U, C=G

The first level of DNA organization in a eukaryotic cell is maintained by which molecule?

chromatin

The chromosomes become visible under a light microscope during which stage of mitosis?

prophase

Which of the following combinations of base pairs will be found in a molecule of DNA?

A=T, C=G

If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of?

incomplete dominance

Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green.

100 percent yellow seeds

Crossing Over is when two sets of sister chromatids (also known as a tetrad) touch and swap genes. Why is this important in biology?

It creates unique genetic variation among organisms

Which of the following statements accurately describes differences between DNA replication in prokaryotes and DNA replication in eukaryotes?

Prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many

Another term for sex cells is...

Gametes

Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis?

telophase

A recessive trait will be observed in individuals that are ___ for the trait

homozygous

This is where two sets of sister chromatids known as a tetrad touch and swap genes.

Crossing over

This guy is the father of genetics

Mendel

Human blood typing is an example of what

co-dominate

If you have 42% G, how much A do you have?

42 G = 42 C → 84

100-84 → 16 for A and T

16/2 → 8 A

A cells DNA packaged as a double stranded DNA molecule is called this

chromosome

Chromatids is a characteristic of which stage of mitosis. 

prophase

Another term for sex cells is this

gametes

In prokaryotes, mitosis is known as this

binary fission

this can occur in a cell when the cell is damaged, no longer needed, or infected by a virus

Apoptosis

Identical copies of chromatin held together by cohesion at the centromere are called this

Sister chromatids

Meiosis usually produces four ___ daughter cells

haploid

This (or cycle rest) is when the cells are not actively preparing to divide the cells and it is in an inactive stage when cells exit the cell cycle.

G0 (g zero) phase

Why are channels necessary to transport

ions are charged particles and cannot diffuse through the hydrophobic interior of the membrane