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Luda [366]
3 years ago
13

Examine a two-gene cross in which a mutation in HERC2 is epistatic to the OCA2 gene. In a cross between a blue-eyed OOhh woman a

nd a blue-eyed ooHH man, what eye color will the progeny have?
a. 9 brown eyes: 7 blue eyes
b. 3 brown eyes: 1 blue eyes
c. All blue eyes
d. All brown eyes
Biology
1 answer:
frez [133]3 years ago
5 0

Answer:

The correct option is d. All brown eyes. The progeny will be 100% brown-eyed.

Explanation:

Due to technical problems, you will find the complete explanation in the attached files

Download pdf
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If a father is affected by an X-linked dominant condition and the mother is not, which children can inherit the condition?
kaheart [24]

Answer:

only females

Explanation:

In humans, sex chromosomes in males and females are different. The sex chromosomes found in humans are X and Y chromosomes. X-linked trait is a trait which is inherited on the X- chromosome. According to the question, the trait is passed on a X-linked dominant condition, which means the condition is inherited on the abnormal dominant X-chromosome that will express itself even when in an heterozygous state with a normal X-chromosome.

Hence, a father affected by the condition will have a genotype; XY while a mother that does not have the condition will have a genotype: xx (two normal x chromosomes). Since the Father can only pass his X chromosome to his daughters and never his sons, all his daughters will inherit the condition (see the punnet square in attached image).

N.B: None of the sons will inherit the condition since the mother will pass normal X-chromosomes (x) to her sons.

7 0
3 years ago
Which of the following is true of rods?
Alex17521 [72]

Answer: A - Rods are more numerous than cones

Explanation: Rods are found everywhere in the retina except the fovea (a tiny pocket in the retina where just about all of the cones are located).

B. The macula lutea is another word for fovea, no rods are found there.

C. Rods are utilized in low-light conditions and are not <em>sensitive</em> to wavelengths of light.

D. Cones are responsible for perceiving color and not rods.

E. The main function of the rods is to help us see in low-light conditions (scotopic vision), so this answer would be incorrect.

8 0
2 years ago
How do photosynthesis and aerobic cellular respiration depend upon each other?
gayaneshka [121]
Photosynthesis gives out oxygen and takes in carbon dioxide
Aerobic respiration uses the oxygen and gives out carbon dioxide
-Making a cycle

(Without the respiration the cell would die which would stop photosynthesis)

Hope this helps!!
8 0
3 years ago
One difference between parasitism and predation is that parasites
valina [46]
C is the correct anwer
3 0
3 years ago
Read 2 more answers
Biological systematics and ethnoscience differ in what way? Ethnoscience and systemics both attempt to examine how all societies
Phoenix [80]

Answer:

Ethnoscience attempts to understand how people understand the world and plant systematics attempts to use classification to document evolutionary relationships between organisims

Explanation:

Ethnoscience is a study about how people see the world around them. This study shows how different people understand the nature and life under the influence of different cultures.

On the other hand, systematics shows relationships among living things through a certain period of time. Those relationships are graphically represented by phylogenetic trees or cladograms.

3 0
3 years ago
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