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lisabon 2012 [21]
2 years ago
15

If a mother carries a recessive allele for a genetic disorder, such as cystic fibrosis, under what circumstances will her childr

en inherit the disorder?
A) The children's father must also carry the recessive allele.

B) The mother's father must also carry the recessive allele

C) The paternal grandfather must also carry the recessive allele.

D) The children must be female like the mother to inherit the disorder
Biology
1 answer:
Stels [109]2 years ago
8 0

Answer: B) The mother's father must also carry the recessive allele

Explanation:

How Are Men Affected by Cystic Fibrosis? Males account for slightly more than 50 percent of all cases of cystic fibrosis (CF) but generally have better outcomes than females until about age 20.

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Select the examples of genetically modified organisms (GMOs).
Sliva [168]

Answer:

B, C and E

Explanation:

There are reports of farmed salmon crops designed to grow faster, cotton crops harvested for tissue production (resistant to insects) and rice crops modified to contain more iron, where you can get all the information on how this GMO (genetically modified organism) was produced.

For foxes and sunflowers, only crossbreeding techniques are available.

3 0
3 years ago
What is the main advantage of the amniotic egg?
Morgarella [4.7K]

Answer:

b. It allows gas exchange while preventing water loss

Explanation:

Amniotic eggs are the feature of land animals such as reptiles, birds, mammals, etc. The amniotic eggs have four extra-embryonic membranes. This semipermeable protective shell allows the exchange of respiratory gases but does not support the transport of water out of the egg.

The ability to maintain the water inside the egg while permitting gaseous exchange is the specific feature of amniotic eggs and allowed diversification of land animals in the land habitats.

7 0
3 years ago
13. What innovation did Jethro Wood add to plows in the 1800s?
emmasim [6.3K]

Answer:

A

Explanation:

(March 16, 1774[1] – 1834) was the inventor of a cast-iron moldboard plow with replaceable parts, the first commercially successful iron moldboard plow

8 0
3 years ago
How does biodiversity support healthy ecosystems
pav-90 [236]

ANSWER: Biological biodiversity refers to all the different kinds of life that are obtainable in a particular ecosystem, this include all the plants and animal populations that are found in a particular geographical area.

Biodiversity supports healthy ecosystem because it enhances the productivity and the survival of the ecosystem. For instance, in a situation where there are large number of different plant population in an ecosystem, such population will present variability in genetic make up. If a negative event occur in the ecosystem, it will be possible for some plants to survive. But, in a situation where it is only one type of plant that is obtainable in the ecosystem, it will be quite easy to wipe all of them out at once. For instance, a disease outbreak can easily destroy all the plants.

6 0
3 years ago
How many genes to dihybrids compare?<br><br> 1<br> 4<br> 3<br> 2
Gre4nikov [31]

Answer:

1

Explanation:

Therefore, a dihybrid organism is one that is heterozygous at two different genetic loci. In 1865, Gregor Mendel performed dihybrid crosses on pea plants and discovered a fundamental law of genetics called the Law of Independent Assortment.

4 0
2 years ago
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