All categories

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).

You might be interested in

How do cells take in nutrients for growth and development

miss Akunina [59]

Usually blood transports nutrients

5 0

2 years ago

According to the nebular theory stars are formed in which sequence

tatiyna

According to the nebular theory stars are formed in which sequence:
a. Interstellar clouds - "nebula" is a Latin word which means clouds. These clouds start to form and are composed of gases like hydrogen and helium.

b.Clumps - as the gases start to form and come together they form clumps of gases that are highly concentrated and they start to grow.

c. Gravitational forces - when clumps have grown into big sizes the gravitational forces that are found within it increases and are converted into kinetic energy of fast-moving particles that continuously bump into each other and create or generate heat.

d. Nuclear fission - as the clumps keep on colliding and creating heat (18 million degrees Fahrenheit), nuclear fission begins.

e. Outward pressure from the nuclear fission prevents the collapse of the gases, stabilizing the gases eventually creating a star.

3 0

3 years ago

Middle adolescence is characterized by __________.A.feelings of invincibilityB.simple thinking processesC.increasing conflict wi

Alexxx [7]

Answer:

A) Feelings of invincibility

Explanation:

Adolescence refers to the period of human growth that occurs

between childhood and adulthood. Adolescence begins at around age

10 and ends around age 21. Adolescence can be broken into three

stages: early adolescence, middle adolescence, and late

adolescence. Each stage has its own characteristics. Let's take a

look at each stage in more detail below.

Middle adolescence is the second stage and occurs from ages 15 to

17. By this time, puberty has passed. Teens in this stage are

extremely concerned with how they look, and they think others are

concerned, too. They spend a large amount of time grooming,

exercising, and modifying their physical appearance.

Girls are especially preoccupied with their physical appearance and

being sexually attractive.

Relationships are often changing during middle adolescence. There

is also worry about sexual attractiveness. Middle adolescents

complain about their parents preventing them from becoming

independent, and they withdraw from them. They may try to assert

their independence by refusing to bathe, not cleaning their rooms,

and picking up annoying habits. There is an intense focus on peer

groups during middle adolescence, and teens in this stage tend to

confide in each other more than they do their parents.

As with early adolescence, teens in middle adolescence may feel

invincible. Risk-taking behaviors are significantly increased during

this stage. On the other hand, acting-out behaviors begin to

decrease, since teens in this stage have a better grasp on how to

use words as a means of expression.

6 0

3 years ago

Unlike freshwater fish, saltwater fish

miskamm [114]

Unlike freshwater fish, saltwater fish often contain a lower concentration of salt than the water they live in.

so your answer is A. often contain a lower concentration of salt than the water they live in.
hope that helps!!!!!

6 0

2 years ago

Toward an Artificial Cell Scientists have recently constructed an artificial ribosome in vitro from purified ribosomal proteins

dalvyx [7]

Answer:

RNAs and proteins can bind via electrostatic interactions, hydrophobic interactions, Hydrogen bonding interactions and base stacking interactions

Explanation:

Proteins bind to nucleic acids (i.e., both DNA and RNA) through different types of interactions:

- electrostatic interactions, also known as van der Waals interactions, refer to attractive/repulsive interactions between molecules depending on their electric charges.

- hydrophobic interactions, i.e., interactions between nonpolar molecules and water molecules

- Hydrogen bonding interactions resulting from the interaction between a hydrogen (H) atom that bind to an electronegative atom (e.g., N, O, F, etc), and another electronegative atom.

- base stacking interactions that result from the arrangement of RNA nucleotides

In this case, it is also important to highlight that the interaction will depend on the specific tertiary structure of ribosomal proteins and ribosomal RNAs (rRNAs).

7 0

3 years ago