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morpeh [17]
3 years ago
8

Tomas is continually tense and plagued by muscle tension, sleeplessness, and an inability to concentrate. he most likely suffers

from _____ disorder.
Biology
1 answer:
Natalija [7]3 years ago
6 0
Sounds like ADD (<span>Attention-Deficit Disorder).</span>
You might be interested in
Mitosis results in _______, while meiosis results in_______.
butalik [34]
I answered it before !!

B is the correct one !! Mitosis in two identical diploid and meiosis in 4 genetically varied haploid !!
6 0
3 years ago
Which does NOT occur in telophase? Cytokinesis is under way. The nuclear envelope is being reconstructed. The centromeres split
Lostsunrise [7]

Answer:

The centromeres split apart

Explanation:

Telophase is the last sage of cell cycle that ultimately result in the formation of daughter cells. The chromosome become more condense in this stage.

The nuclear envelope reconstructed and the cyotkinesis is under way in the telophase. The nucleolus reforms in the telophase. The centromeres are split part in the anaphase stage of the cell cycle.

Thus, the correct answer is option (3).

7 0
3 years ago
In humans, syndactyly (webbed digits) is inherited by possession of a dominant allele (S). If a man who is homozygous and normal
____ [38]

Answer:

The % of children with webbed digits is 50%

Explanation:

Given -

Syndactyly or webbed digits are due to the presence of  a dominant allele (S). Then the allele for normal digits would be represented by allele "s"

A normal man with normal digits and genotype "ss" marries a woman with webbed digits and has a hetrozygous genotype i.e "Ss"

If we cross Ss and ss , then the following offspring are produced -

Ss * ss

Ss, Ss, ss, ss

Out of four 2 offspring with genotype ss have normal digits and remaining two offspring with genotype "Ss" have webbed digits. Thus, the % of children with webbed digits is 50%

5 0
3 years ago
What occurs if a t cell binds to an antigen and the t cell does not receive a co-stimulatory signal?
tresset_1 [31]
The correct answer is that "the T cell enters a state of anergy".

The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.
4 0
3 years ago
On your Spring Break in Mexico, you take a break to count the starfish in a tidal pool. You notice that there is a rare recessiv
lana [24]

Answer:

0.04 for 6 legs starfish and 0.96 for 5 legs starfish.

Explanation:

The allele frequency for the 6 legs starfish is 0.04 whereas, the allele frequency for the 5 legs starfish is 0.96 because there is only one 6 legs starfish in the given population as compared to 5 legs starfish. The low population of 6 legs starfish is due to the presence of recessive allele while on the other hand, higher population of 5 legs starfish is due to the presence of dominant allele. The allele frequencies for both population is done by dividing the allele of interest by total number of alleles present in the population.

5 0
3 years ago
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