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sveta [45]
3 years ago
15

.Hemophilia is a sex-linked disorder that is caused by a defective gene on the X chromosome. What will be the pattern of inherit

ance of the offspring of a hemophiliac father?
Biology
1 answer:
andrezito [222]3 years ago
6 0
Since the father has a defective X chromosome, this can be understood as the father have xY chromosomes, with x being the defective one. Since the father will only pass on his Y chromosomes to his sons, none of his sons will be affected. However, the father will pass on his x chromosomes to his daughters. Therefore, his daughters will all be affected.
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The proteins that help defend the body against bacteria, toxins, and allergens are called
Arte-miy333 [17]
The proteins that help defend the body against bacteria, toxins, and allergens are called antibodies. The antibody<span> (Ab) protein is also known as an immunoglobulin (Ig).
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6 0
3 years ago
Examine the leaves of a palm tree.
Rom4ik [11]

Answer:

Examine the leaves of a palm tree. Which statement most specifically describes a palm tree?

Palm trees are monocots.

Palm trees are angiosperms.

Palm trees are flowering plants.

Explanation:

Those three features best describes a palm tree, they are angiosperms because they produces seeds and flowers

4 0
3 years ago
Read 2 more answers
11.1 The Science of Ecology Lesson 11.1: True or False Name __________________ Class ______________ Date ________ Write true if
tangare [24]

Answer:

See explanation below

Explanation:

1. Biotic factors include sunlight, soil, temperature, and water. FALSE

Biotic factors include animals, plants, fungi, bacteria and protists.

2. Like nutrients and water, energy also recycles through an ecosystem. FALSE

3. An ecosystem consists of all the biotic and abiotic factors in an area and their interactions. TRUE

4. Herbivores are a necessary link between producers and other consumers. TRUE

5. A niche refers to the place an organism lives within its ecosystem. TRUE

6. Dung beetles eat animal feces. TRUE

7. Autotrophs make their own food. TRUE

8. Organisms use 90% of the available energy at each trophic level. FALSE

9. Carnivores include lions, polar bears, hawks, frogs, salmon, and deer. FALSE

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10. Biomass increases at the upper levels of a food chain. FALSE

11. Producers occupy the first trophic level. TRUE

12. Scavengers include vultures and raccoons. TRUE

13. In a complex ecosystem, it is likely that two different species will occupy the same niche. FALSE

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4 0
2 years ago
These genes are 30 units apart on chromosome III. In this problem, you will calculate what crossing over in the female contribut
Damm [24]

Answer:

This exercise is incomplete. The response options are as follows:

a) e+ ca+

b) e ca

c) e ca+

d) e+ ca

The answer is c) e ca+ and d) e+ ca

Explanation:

The Punnett square is a diagram used by biologists to calculate the probability that an individual has a particular genotype. In the Punnett square, each of the possible combinations for the expression of the dominant and recessive alleles can be observed. In the case of exercise, since a crossing is not possible in men, these will only help later during the combination of the alleles.

7 0
3 years ago
Is rice pudding a homogeneous or heterogeneous mixture?
wel
<span>Rice pudding would be an example of a heterogeneous mixture. A heterogeneous mixture means that different constituents of a mixture can be identified. Rice pudding consists of rice suspended in a cream. It is possible to identify the grains of rice and the creamy part of the mixture. A homogeneous mixture looks the same throughout--you cannot identify individual parts or ingredients. The parts of a homogeneous mixture are said to be uniformly distributed. Rainwater and air are examples of homogeneous mixtures.</span>
8 0
3 years ago
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