Worksheets8th Grade #4: Genes and Heredity
Total questions: 30
Worksheet time: 17mins
Many people have dimples. The dimple allele (D) is dominant to the non-dimple allele(d). A Punnett square shows a cross between a Dd parent and a dd parent. What is the probability that their child will have short dimples?
0/4
1/4
2/4
3/4
4/4
One of the biggest news stories of 1996 was the successful cloning of Dolly the sheep. Dolly was the first mammal cloned from an adult body cell. At first, Dolly appeared to be perfectly healthy. However, she died at age 6 of cancer. Dolly's early death made scientists wonder whether cloned animals age faster than normal. A small flock of sheep cloned from Dolly have been observed since 2007. Happily, these clones show no sign of early aging. Scientists worried that cloned animals would age rapidly because their cells contain_______________ as old as the individual they were cloned from.
DNA
cytoplasm
RNA
proteins
Animal breeders are just as excited about genetic technologies as doctors. Many problems that were difficult before now have a solution in sight. Which of the following problems could potentially be solved through DNA fingerprinting?
test to confirm that a calf was fathered by a specific bull
produce a bull with identical DNA to a champion
produce a very small but healthy breed of cow
remove a gene to develop cows with no horns
How many chromosomes does every body cell have in a human with Down syndrome?
48
46
24
47
Which of the following explains the genetic material in the offspring?
the offspring has genetic material 50% mom and 50% dad
the offspring has genetic material 100% mom and 100% dad
the offspring has genetic material 0% mom and 100% dad
the offspring has genetic material 100% mom and 0% dad
In the punnett square below, what belongs in the missing square
In the punnett square, what is the probability for white fur?
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? (Hint: Make a Punnett square on some scratch paper.)
What is a gene
a section of DNA that codes for a trait
a pair of pants that are made of denim
the whole entire chromosome found in the nucleus
What is a genetic mutation
the making of a zombie
any change in the DNA base pairs
the process of duplicating the DNA in a cell
A substitution mutation occurs when
a base pair is missing from the DNA strand
a base pair is added to the DNA strand
a base pair is replaced with a different base pair
A deletion mutation occurs when
a base pair is missing from the DNA strand
a base pair is added to the DNA strand
a base pair is replaced with a different base pair
A mutation that helps an organism survive and reproduce
harmful mutation
helpful mutation
neutral mutation
A mutation that decreases an organism's ability to survive and reproduce
harmful mutation
helpful mutation
neutral mutation
The base pair adenine always pairs with which other base pair?
thymine
adenine
cytosine
guanine
The base pair thymine always pairs with which other base pair?
thymine
adenine
cytosine
guanine
The base pair cytosine always pairs with which other base pair?
thymine
adenine
cytosine
guanine
The base pair guanine always pairs with which other base pair?
thymine
adenine
cytosine
guanine
Mutations can be...
Harmful
Beneficial
Neutral
All of the Above
What types of living organisms have NO genetic material at all?
Insects
Bacteria
Plants
All living organisms have genetic material
