Reproduction
Reproduction
Alleles
Genotype v Phenotype
Genotype v Phenotype 2
100
Define Sexual Reproduction.
A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
100
The sea horse is unique among fish: it mates for life with the same partner. And it's the dad who gets pregnant! A female deposits her eggs in the male's pouch. The male then carries the eggs for 2-4 weeks until they hatch. Muscle contractions help the male give birth to about a hundred baby seahorses.
Sexual, Asexual, or Both?
Sexual Reproduction
100
Define Allele.
Different forms of a gene
100
Define Genotype.
An organism's genetic makeup, or allele combinations.
100
Define Phenotype.
An organism's physical appearance, or visible traits.
200
Define Asexual Reproduction.
A reproductive process that involves only one parent and produces offspring that are identical to the parent.
200
The saguaro is a tree-like cactus that grows over 50 feet tall in desert areas of North America. The cactus flowers in the spring and relies mainly on bats for pollination. The flowers produce fleshy fruit filled with thousands of seeds, each one genetically unique.
Sexual, Asexual, or Both?
Sexual Reproduction
200
What type of letter is used to represent a dominant allele?
Capital Letter
200
Michael has brown hair which is a dominant trait. What are his two possible genotypes?
BB or Bb
200
Matthew's genotype for eye color is BB. What color are his eyes?
Brown
300
How do offspring from Asexual Reproduction compare to their parent genetically?
They are identical.
300
Salmonella is a bacterium that causes food poisoning. In the small intestine, a single Salmonella cell divides in two, rapidly producing many copies of itself. The microscopic bacteria invade our cells, and our immune system responds. We experience fever, nausea, and diarrhea.
Sexual, Asexual, or Both?
Asexual Reproduction
300
What type of letter is used to represent a recessive allele?
Lowercase Letter
300
Jordan's genotype for hair color is bb. What color hair does she have and what is her Genotype called?
Blonde - Homozygous Recessive
300
Pink flowers are dominant over yellow flowers. What is the phenotype for a flower that has the genotype pp?
Yellow
400
How many daughter cells are a result of Mitosis and Meiosis?
Mitosis: 2 Daughter Cells
Meiosis: 4 Daughter Cells
400
The garden strawberry plant grows modified stems, called runners. Along the runners, tiny new strawberry plants take root. Each new plant is identical to the parent. Insect pollinators also visit strawberry flowers. Pollen from one flower join the eggs of another to form seeds that cover the strawberry fruit.
Sexual, Asexual, or Both?
Both
400
Give an example of a human trait that is considered dominant.
Brown Hair, Brown Eyes, etc.
400
Carlie's dog has very curly hair. After doing some research, Carlie found out that curly hair in poodles is the dominant trait. Only one of her dog's parents has curly hair. What is Carlie's dog's genotype?
Cc - because, in order for one parent not to have curly hair, that parent would have to be homozygous recessive, meaning it could only pass a recessive trait to Carlie's dog. If Carlie's dog does have curly hair, then we know that her dog has at least one dominant trait, leading us to the conclusion that Carlie's dog's genotype for Curly Hair is Heterozygous Cc.
400
If both parents of a child are homozygous dominant for brown hair, what can you conclude about their offspring?
Their offspring will also be homozygous dominant for brown hair.
500
Name at least one type of Asexual Reproduction.
Budding, Fragmentation, Binary Fission
500
There are a couple thousand different species of brittle star. At certain times of the year, male and female stars release sperm and eggs into the ocean. But they can reproduce at other times too. They simply split in half and grow new body parts. This ability to regenerate can also help a brittle star escape a predator.
Sexual, Asexual, or Both?
Both
500
Shawn is Homozygous Recessive for blonde hair. How many blonde hair alleles does Shawn have AND what is his genotype?
2 Blonde Hair Alleles - bb
500
Both of Timmy's parents have brown eyes, but Timmy has blue eyes. How is that possible?
At least one of his parents is Heterozygous.
500
Cystic Fibrosis is a genetic disorder that only affects people if their genotype is homozygous recessive. If someone has Cystic Fibrosis (cc), what do you know about their parents?
Both parents have to either be Heterozygous or Homozygous Recessive.