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3 years ago

Which of the following is generally true of an X-linked recessive pedigree?

Biology

1 answer:

Alexandra [31]3 years ago

8 0

Answer:

Option (A).

Explanation:

The inherited disorders have been classified into the autosomal disorders and sex linked disorders. These disorders have been further classified into the dominant and recessive disorder.

The X linked recessive pedigree means that the trait will skip the generation. The disease is passed down from mothers to their sons and male are more affected than female. The heterozygous female acts as a carrier for the X linked recessive trait. The female should be homozygous recessive or have both the X chromosome affected to show the trait.

Thus, the correct answer is option (A).

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You are an almond grower and want to determine whether almond size (measured as shelled almond weight) is a heritable trait. A s

inn [45]

Answer: 1. S = 0.77

2. R = 0.14

Explanation:

1. Selection differential is the difference between the population mean and the average of the selected parents. Its symbol is S.

S = mean of selected parents - population mean

S = 6.48 - 5.71

S = 0.77

2. Response to Selection is how much gain you make when crossing over selected parents. Its symbol is R.

R = mean of offspring of selected parents - population mean

R = 5.85 - 5.71

R = 0.14

3. Heritability is, basically, a statistical variable that shows how much the variation in a trait is due to genetic factors. Its symbol is h².

To calculate it, use Breeder's Equation:

R = h²S

$h^{2}=\frac{R}{S}$

$h^{2}=\frac{0.14}{0.77}$

h² = 0.18

4. You would expect the production to be strongly influenced by environment, because heritability lies between 0 and 1. Low heritability means there is low level of resemblance between offspring and parents. As this program heritability is low, the resemblance is small, which means the characteristics are influenced mostly by the enviroment.

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3 years ago

The muscles in between the ribs are called what

docker41 [41]

The muscles that are grouped in between the ribs are called Intercostal

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What effect do body fossils have on how people understand dinosaurs?

DENIUS [597]

Answer:

c they let people know what dinosaurs looked like

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3 years ago

Which food molecule (monosaccharide, polysaccharide, lipid, or protein) would you eat if...

torisob [31]

You needed a quick boost of energy - MONOSACCHARIDE

You wanted to grow strong nails, you haven't eaten in days - PROTEIN

You wanted to grow healthy hair - PROTEIN

You had a race tomorrow afternoon - POLYSACCHARIDE

You were getting ready for hibernation - LIPIDS

You wanted to get bigger muscles - PROTEIN

Your meal will be in a week - LIPIDS

CARBOHYDRATES include monosaccharide and polysaccharides. They provide immediate energy boost or short term energy storage for animals as well as long term energy storage for plants.

PROTEIN speeds up chemical reactions by lowering activation energy. It is used to form bones and build muscles. It is made up of an amino group, a carboxyl group, and an R group.

LIPIDS can be saturated or unsaturated fatty acids. They are not soluble in water however they provide long-term energy storage for animals.

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3 years ago

Evidence from the fossil record to support punctuated equilibrium would include

Travka [436]

The Punctuated Equilibrium theory proposes that a specie that appears in the fossil record will become stable. To support this theory, a fossil record serves as an evidence which includes transitional fossils. Transitional fossils refers to the remains of an organism that still exhibit traits to both the ancestral and descendant group.

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