Question

Need my answers checked Mendelian Genetics.

Answer 1

1. In the late 1800s, Mendel predicted the existence of "units of hereditary information" or "factors." What do we call these units of hereditary information today? (Points : 3)
loci
chromosomes
genes X
proteins


2. Which term describes the form of a gene that produces a specific trait, such as eye color? (Points : 3)
gamete
chromosome
allele X
chromatid


3. Which term refers to a type of trait that is usually expressed only when an organism has two identical alleles for the trait? (Points : 3)
dominant

recessive

homozygous X

heterozygous


4. What do the letters in each box of a Punnett square tell you? (Points : 3)
the parents of a set of offspring
how to assemble a genetic map of the chromosome on which alleles are located

the possible combinations of alleles in offspring based on the parents' genetic makeup X

that both parents show characteristics of the dominant trait

8. Refer to the following information to answer Questions 8 and 9.
A certain species of grasshopper can have red stripes, yellow stripes, or red and yellow stripes. An RR grasshopper has red stripes, an YY grasshopper has yellow stripes, and an RY grasshopper has red and yellow stripes.

Which type of inheritance is this grasshopper species an example of? (Points : 3)
sex-linked inheritance

recessive inheritance

incomplete dominance

codominance X


9. A grasshopper with red stripes mates with a grasshopper with yellow stripes. What ratio would you expect to see in the phenotypes of their offspring? (Points : 3)
2 with red stripes: 2 with yellow stripes

all with red stripes

1 with red stripes: 2 with red and yellow stripes: 1 with yellow stripes

all with yellow and red stripes X


10. Which of the following best describes the relationship between a gene and an allele? (Points : 3)
A gene is always dominant to an allele.
A gene is always recessive to an allele.
A gene is a variant of an allele. X
An allele is a variant of a gene.


11. Which of the following is the best physical description of a gene? (Points : 3)
A gene is a specific segment of DNA on a chromosome. X

A gene consists of all of the DNA on a chromosome.

A chromosome is a segment of a gene.

Genes carry many chromosomes.


12. Suppose you cross a true-breeding blue flower with a true-breeding yellow flower. In the next generation, all of the flowers are blue. What does this outcome tell you about the allele for blue flowers? (Points : 3)
The blue allele is recessive to the yellow allele.
The blue allele is dominant to the yellow allele. X
The blue allele shows incomplete dominance.
The blue allele is sex-linked.


14. Use the chart to help you answer Question 14.

Jessica's mother has the blood type AB and her father has the blood type O. Which blood type could Jessica have? Draw a Punnett square on scratch paper to help you answer the question, if needed.
(Points : 3)
A

AB X

O

Answer 2

i put a X next to the answer i have chose

Answer 3

you might want to post this in the biology section... this is math lol.

Answer 4

ops lol thanks