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WorksheetsSB2B
Total questions: 15
Worksheet time: 15mins
CROSSING OVER INCREASES
LIFE SPAN
GENETIC VARIATION
THE NUMBER OF OFF-SPRING
ALL ARE TRUE
What phase is represented?
metaphase 1
metaphase 2
anaphase 1
anaphase 2
What phase is represented?
metaphase 1
metaphase 2
anaphase 1
anaphase 2
This image shows chromosomes during Prophase 1. Which of the following correctly describes the process shown?
segregation of sister chromatids
condensation and segregation of alleles
mutationin which the DNA content of the gene is altered
crossing - over in which alleles are exchanged
Crossing over in organisms is responsible for...?
Dominance of genes
Recombination of genes
Linkage
Segregation of alleles
The image is an example of
(a)
Crossing over occurs during prophase I of meiosis. Which statement about crossing over is true?
RNA translation occurs in the smooth endoplasmic reticulum
Crossing over takes place in backterial cells
Crossing over produces genetically identical daughter cells
Crossing over provides genetic diversity in eukaryotic cells
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
TAC ACT GTC
GTA AGT GAC
CAT TCA CTG
Why is DNA important?
it is very small and very complicated
it's in everything
it serves as the blueprint for traits of all living things
because we eat it every day for energy
Which 2 molecules form the sides (backbone) of the DNA ladder?
deoxyribose sugar and adenine
deoxyribose sugar and a hydrogen bond
deoxyribose sugar and the nucleus
deoxyribose sugar and phosphate
The enzyme that unzips the DNA to prepare for replication
helicase
replicase
polymerase
synthase
DNA replication results in two DNA molecules,
each one with two original strands
each one with two new strands
each one with one new strand and one original strand
one with two new strands and the other with two original strands
In what phase of the cell cycle does DNA replication take place?
G1
S
G2
M
Which enzyme is responsible for building nucleotides?
Helicase
DNA Polymerase
Ligase
Primase
SB2B
A) It is a type of protein involved in cellular respiration
B) It is a gene that codes for a specific enzyme in photosynthesis
C) It is a segment of DNA that regulates the cell cycle
D) It is a molecule that acts as a neurotransmitter in the brain
