Reproduction
Genetics Vocab
Genetics Concepts
Punnett Squares 1
Punnett Squares 2
100
How many parents does asexual and sexual reproduction have?
asexual: 1 parent
sexual: 2 parents
100
What is a gene?
a section of DNA
100
Out of the following options, where is DNA located in a cell?
A. chromosome
B. cell wall
C. lysosome
A. chromosome
100
In a certain species of cypress trees, short needles (S) are dominant to long needles (s). Two long needled trees have offspring. What would be the probability of having offspring with short needles?
0%
100
Complete the Punnett Square below.
200
Which type of reproduction has more genetic diversity?
Sexual reproduction
200
What is the difference between heterozygous and homozygous? Purebred and hybrid?
heterozygous/hybrid: made of 2 different alleles, ex) Ll, Nn
homozygous/purebred: made of 2 same alleles, ex) BB, yy
200
A male black lab passes on an black allele to its offspring (B) and the female yellow lab passes on the yellow allele (b). One of the offspring has the genotype Bb. What does Bb mean to geneticists?
One dominant allele, one recessive allele - heterozygous
200
In pea plants, purple flowers (F) are dominant to white flowers (f). A geneticist crosses a homozygous purple flower and a heterozygous purple flower. What is the probability of producing white offspring ?
0%
200
A plant that is dominant for purple flowers is crossed with a plant that is recessive for white flowers. What genotypes and phenotypes are possible?
A. PP=white, pp=white, Pp=purple
B. PP=purple, pp=purple, Pp=white
C. PP=purple, pp=white, Pp=purple
C. PP=purple, pp=white, Pp=purple
300
Name a disadvantage of asexual reproduction
If one organism gets a disease, then all of the organism will get it too because they are genetically identical
300
What is the different between dominant and recessive?
dominant: stronger allele, masks (covers up) the recessive allele
recessive: weaker allele, covered up by the dominant allele
300
A pure dark gray snake is crossed with a pure black snake. All of the offspring are dark gray. What does that mean?
dark gray is dominant and black is recessive
300
Two purebred black rabbits (B) have 8 offspring. Which choice below would be the probable outcome?
A. 0 black rabbits out of 8 (0%)
B. 4 black rabbits out of 8 (50%)
C. 8 black rabbits out of 8 (100%)C. 8 black rabbits out of 8 (100%)
300
What does the '?' represent in the image below?
'?': a
400
In sexual reproduction, how many genes do you get from each parent?
half from mom and half from dad (50/50)
400
What is the difference between genotype and phenotype?
genotype: gene combination, ex) BB, rr
phenotype: physical appearance, ex) blue eyes, curly hair
400
Brown eyes is dominant over blue eyes. If Joey has brown eyes, like his mom, and his sister Ella has blue eyes, like her dad, which of the options best describes the sibling's inheritance?
A. Joey inherited all of his genes from his mom and Ella inherited all of his genes from her dad
B. Joey and Ella inherited different combination of genes from their parents
C. Joey and Ella didn't inherit eye color from their parents
B. Joey and Ella inherited different combination of genes from their parents
400
A man has a widow's peak, and his wife does not. The man has a homozygous dominant genotype for widow's peak, and his wife has a homozygous recessive genotype for no widow's peak. If the man and his wife decide to have children, what is the probability of them having a child with widow's peak?
100%
400
Use the Punnett Square below to answer the following question. The Punnett square shows the result of a cross between two parents. Which choice below represents the genotypes of the two parents?
A. Ff and ff
B. FF and Ff
C. FF and ff
C. FF and ff
500
The diagram below represents reproduction in a yeast cell. This is a type of asexual reproduction. How are the genes of the offspring compared to its parent?
The genes in the offspring are identical to the genes in the parent
500
What is Z? Give its definition
Gene - section of DNA
500
A student is doing a genetics experiment on crickets. The student breeds a pure striped fruit fly with a pure solid fruit fly. The student repeats this experiment ten more times. Every time the student performs this cross, all of the offspring are striped. What does that mean?
Striped is dominant over solid because all the offspring have the striped phenotype
500
In mice, gray fur is dominant to white fur. Two mice are placed in the same cage and have several litters. Of all the offspring, 16 mice have white fur and 18 mice have gray fur. Which of the following crosses could produce this combination?
A. Gg x gg
B. GG x gg
C. gg x gg
A. Gg x gg
500
In guinea pigs, short hair (H) is dominant to long hair (h). A hybrid short hair guinea pig and a long-haired guinea pig are in the same cage and have several litters, totaling 36 offspring with a variety of fur lengths. Which of the following is the BEST prediction of a Punnett square outcome?
A. 36 could have short hair and 0 have long hair
B. 19 could have short hair and 17 have long hair
C. 8 could have short hair and 28 could have long hair
B. 19 could have short hair and 17 have long hair